Wolfgang Tutschke

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All published works

Action	Title	Year	Authors
+	The Distinguishing Boundary for Monogenic Functions of Clifford Analysis	2014	Wolfgang Tutschke
+	Boundary value problems for elliptic equations - real and complex methods in comparison	2013	Wolfgang Tutschke
+	Multi-monogenic functions in different dimensions	2011	Wolfgang Tutschke Le Hung Son
+	General Algebraic Structures of Clifford Type and Cauchy-Pompeiu Formulae for Some Piecewise Constant Structure Relations	2011	Wolfgang Tutschke Carmen Judith Vanegas
+	A boundary value problem for monogenic functions in parameter-depending Clifford algebras	2010	Wolfgang Tutschke Carmen Judith Vanegas
+	Some comments on associated operators for potential vector fields	2010	Wolfgang Tutschke Hung Son Le
+	A new concept of separately holomorphic and separately monogenic functions	2010	Wolfgang Tutschke Hung Son Le
+	Reduction of boundary value problems to fixed-point problems using real and complex fundamental solutions	2010	Wolfgang Tutschke
+	Algebraic structures in partial differential equations related to complex and clifford analysis	2010	Le Hung Son Wolfgang Tutschke
+	Clifford Algebras Depending on Parameters and Their Applications to Partial Differential Equations	2008	Wolfgang Tutschke Carmen Judith Vanegas
+	Associated spaces - A new tool of real and complex analysis	2008	Wolfgang Tutschke
+	Some Topics on Value Distribution and Differentiability in Complex and P-adic Analysis	2008	Alain Escassut Wolfgang Tutschke Chung Chun Yang
+	Function Spaces in Complex and Clifford Analysis	2008	Hung Son Le Wolfgang Tutschke
+	Generalized Analytic Functions in Higher Dimensions	2007	Wolfgang Tutschke
+	Interior estimates in the sup-norm for generalized monogenic functions satisfying a differential equation with an anti-monogenic right-hand side	2007	Wolfgang Tutschke Nguyen Thanh Van
+ PDF Chat	Solution of a Goursat Problem in Optimal Domains	2007	Wolfgang Tutschke
+ PDF Chat	Associated Spaces Defined by Ordinary Differential Equations	2006	Le Thu Hoai Wolfgang Tutschke
+	Conservation laws in co-associated spaces	2006	Wolfgang Tutschke
+	Complex analysis within the framework of analytical methods for partial differential equations	2006	Wolfgang Tutschke
+	Optimal balls for the application of the Schauder Fixed-Point Theorem	2005	Wolfgang Tutschke
+ PDF Chat	Complex methods in higher dimensions – recent trends for solving boundary value and initial value problems	2005	Le Hung Son Wolfgang Tutschke
+	The Cauchy-Kovalevskaya theorem —Old and new	2005	Wolfgang Tutschke
+	An introduction to complex analysis: classical and modern approaches	2005	Wolfgang Tutschke Harkrishan Lal Vasudeva
+	An Introduction to Complex Analysis	2004	Wolfgang Tutschke Harkrishan Lal Vasudeva
+	ASSOCIATED PARTIAL DIFFERENTIAL OPERATORS – APPLICATIONS TO WELL- AND ILL-POSED PROBLEMS	2004	Wolfgang Tutschke
+	Interactions between partial differential equations and generalized analytic functions	2004	Wolfgang Tutschke
+	A complex method for solving boundary value problems with boundary data piecewise belonging to fractional order spaces	2004	G. Manjavidze Wolfgang Tutschke Harkrishan Lal Vasudeva
+	Methods of Complex and Clifford Analysis	2004	Wolfgang Tutschke
+	Existence and Uniqueness of the Solution to Fuchsian Equations Involving Generalized Analytic Functions	2004	Wolfgang Tutschke Jose Ernie C. Lope
+	Generalized Analytic Functions and their Contributions to the Development of Mathematical Analysis	2004	Wolfgang Tutschke
+	Methods of complex and Clifford analysis : Proceedings of 2004 International Conference on Applied Mathematics	2004	Le Hung Son Wolfgang Tutschke Sapna Jain
+	First Order Differential Operators Associated to the Cauchy—Riemann Operator in the Plane	2003	Le Hung Son Wolfgang Tutschke
+ PDF Chat	An Extended Cauchy-Kovalevskaya Problem and its Solution in Associated Spaces	2002	Kiyoshi Asano Wolfgang Tutschke
+	Another Approach to Hölder Estimates for the ∂¯-Operator on Polycylinders - Some Comments to P.W. Darko's Paper	2002	Wolfgang Tutschke
+	Linear Generalized Analytic Functions	2002	Wolfgang Tutschke Harkrishan Lal Vasudeva
+	Real and Complex Fundamental Solutions: A Way for Unifying Mathematical Analysis	2002	Wolfgang Tutschke
+	Functional-Analytic And Complex Methods, Their Interactions, And Applications To Partial Differential Equations	2001	H. Florian Wolfgang Tutschke Norbert Ortner Franz Schnitzer
+	THE METHOD OF WEIGHTED FUNCTION SPACES FOR SOLVING INITIAL VALUE AND BOUNDARY VALUE PROBLEMS	2001	Wolfgang Tutschke
+	Singular partial complex differential equations as conditions for initial functions	2000	Wolfgang Tutschke З. Д. Усманов
+ PDF Chat	Identity Surfaces	2000	Wolfgang Tutschke
+	A Separation Lemma for the Construction of Finite Sums Decompositions	2000	Wolfgang Tutschke
+	A short note on hartogs type continuation theorems	1999	Wolfgang Tutschke
+	Solution of initial value problems for first order systems using matrix notation	1999	Wolfgang Tutschke
+	Generalized Monogenic Functions Satisfying Differential Equations with Anti-Monogenic Right-Hand Sides	1999	Wolfgang Tutschke Ü. Yüksel
+	Complex Methods in the Theory of Initial Value Problems	1999	Wolfgang Tutschke
+	FIXED-POINT PROBLEMS IN BANACH SPACES	1999	Wolfgang Tutschke
+	Complex Methods for Partial Differential Equations	1999	Wolfgang Tutschke
+	Optimal Balls for Solving Fixed-Point Problems in Banach Spaces	1999	Wolfgang Tutschke
+	Generalized analytic functions in mathematical analysis	1998	Wolfgang Tutschke
+	Generalized Analytic Functions. Theory and Applications to Mechanics	1998	Wolfgang Tutschke
+	Generalized Analytic Functions in Mathematical Analysis	1998	Wolfgang Tutschke
+	Matrix differential transformations	1997	H. Florian Jürgen Püngel Wolfgang Tutschke
+	A variational principle for generalized analytic functions	1997	Wolfgang Tutschke Harkrishan Lal Vasudeva
+	Fatou and Lusin-Privalov-type theorems for polyanalytic functions of two variables in bicylinders	1997	Wolfgang Tutschke M. B. Balk V. Vassilenko
+ PDF Chat	Compactness of an Integro-Differential Operator of Cauchy-Kovalevskaya Theory	1996	Wolfgang Tutschke Harkrishan Lal Vasudeva
+	On integration and differentiation of generalized analytic functions	1996	Wolfgang Tutschke Claudio Withalm
+	Functional Analytic Methods in Complex Analysis and Applications to Partial Differential Equations	1995	Wolfgang Tutschke Ali Seif Mshimba
+ PDF Chat	On Associated and Co-Associated Complex Differential Operators	1995	Rudolf Heersink Wolfgang Tutschke
+	Stone-weierstrass approximations by solutions of elliptic differential equations	1995	Rudolf Heersink Wolfgang Tutschke
+	Solution of Initial Value Problems in Associated Spaces	1995	Wolfgang Tutschke Rudolf Heersink
+	An elementary approach to Clifford analysis	1995	Wolfgang Tutschke
+	Results and problems in the theory of generalized analytic functions and its influence on the present development of mathematical analysis	1995	Wolfgang Tutschke
+	New aspects in teaching mathematical analysis	1995	Wolfgang Tutschke
+	Proceedings of the functional analytic methods in complex analysis and applications to partial differential equations, International Centre for Theoretical Physics, Trieste, Italy, 25-29 January 1993	1995	Wolfgang Tutschke Ali Seif Mshimba
+	A decomposition theorem for solving initial value problems in associated spaces	1994	Rudolf Heersink Wolfgang Tutschke
+ PDF Chat	Boundary Theorems of the Gehring-Lohwater and Plessner Type for Polyanalytic Functions	1992	M. B. Balk Wolfgang Tutschke
+	Smoothing Methods of Cousin Type and their Applications to Global Factorizations of Generalized Analytic Functions in Several Complex Variables	1992	Wolfgang Tutschke
+	Ordinary differential equations in the complex domain whose solutions satisfy a partial differential equation of second order	1992	Rudolf Heersink Wolfgang Tutschke
+	Boundary value and initial value problems in complex analysis	1991	Reiner Kühnau Wolfgang Tutschke
+	Geometric function theory and applications of complex analysis to mechanics	1991	Reiner Kühnau Wolfgang Tutschke
+	Functional Analytic Methods in Complex Analysis and Applications to Partial Differential Equations: Ictp, Trieste, Italy 8-19 February 1988	1990	Ali Seif Mshimba Wolfgang Tutschke
+	Properties of bauer, bergman and bekua operators for elliptic differential equations with complex coefficients	1990	Rudolf Heersink Wolfgang Tutschke
+	Scales of Banach Spaces	1989	Wolfgang Tutschke
+	Contraction-Mapping Principles in Scales of Banach Spaces	1989	Wolfgang Tutschke
+	The Classical Cauchy-Kovalevskaya Theorem	1989	Wolfgang Tutschke
+	Initial Value Problems with Generalized Analytic Initial Functions	1989	Wolfgang Tutschke
+	Solution of Initial Value Problems in Classes of Generalized Analytic Functions	1989	Wolfgang Tutschke
+	Further Existence Theorems for Initial Value Problems in Scales of Banach Spaces	1989	Wolfgang Tutschke
+	Non‐Holomorphic Solutions to Ordinary Differential Equations in the Complex Domain	1989	Wolfgang Tutschke Claudio Withalm
+	Initial Value Problems with Generalized Analytic Initial Functions on R<scp>IEMANN</scp> Surfaces	1989	Wolfgang Tutschke
+	Solution of Initial Value Problems in Scales of Banach Spaces	1989	Wolfgang Tutschke
+	Initial Value Problems in Banach Spaces	1989	Wolfgang Tutschke
+	Solution of initial value problems in classes of generalized analytic functions : the method of scales of Banach spaces	1989	Wolfgang Tutschke
+	Basic Properties of Generalized Analytic Functions	1989	Wolfgang Tutschke
+	On the Construction of Potential Vectors and Generalized Potential Vectors Depending on Time by a Contraction Principle	1989	Wolfgang Tutschke
+	Große Sätze und schöne Beweise der Mathematik	1988	Josef Naas Wolfgang Tutschke
+	First-order differential operators in the three-dimensional euclidean space being associated to the differential operator rot	1987	Wolfgang Tutschke
+	Große Sätze und schöne Beweise der Mathematik	1986	Josef Naas Wolfgang Tutschke
+ PDF Chat	On an Abstract Nonlinear Cauchy-Kowalewski Theorem – a Variant of L. Nirenberg’s and T. Nishida’s Proof	1986	Wolfgang Tutschke
+	Peripetierechnung	1985	Josef Naas Wolfgang Tutschke
+ PDF Chat	On the approximation of continuous functions by solutions to partial complex differential equations	1985	Wolfgang Tutschke
+	Holomorphic extensions of functions on submanifolds: A generalization of H, lewy's example	1985	Wolfgang Tutschke
+ PDF Chat	Some estimates of the norms of derivatives of holomorphic functions, and their application to initial value problems (in Russian)	1984	G.F. Mandzhavidze Wolfgang Tutschke
+	The cauchy–Kovalevska theorem for pseudoholomorphic functions in the sense of L. Bers	1983	Wolfgang Tutschke Claudio Withalm
+	Cauchy problems with monogenic initial values	1983	Wolfgang Tutschke
+ PDF Chat	Complex methods in non-linear analysis	1983	Josef Naas Wolfgang Tutschke
+	Partielle Differentialgleichungen : klassische, funktionalanalytische und komplexe Methoden	1983	Wolfgang Tutschke
+ PDF Chat	Solutions with prescribed periods on the boundary components on non-linear elliptic systems of first order in multiply connected domains in the plane	1983	Wolfgang Tutschke
+ PDF Chat	Relations between the boundary values and periods for generalized analytic functions in $R^n$	1983	Wolfgang Tutschke
+	A general method for approximate solving of mixed problems in the theory of partial differential equations	1982	Wolfgang Tutschke
+	Elliptic Evolution Processes	1981	Wolfgang Tutschke
+	Analyticity of the set of all zeros of solutions for implicit non‐linear systems of partial differential equations	1981	Wolfgang Tutschke
+ PDF Chat	Boundary value problems for generalized analytic functions of several complex variables	1981	Wolfgang Tutschke
+	Geel, R., Singular Perturbations of Hyperbolic Type. Mathematical Centre Tracts 98. Amsterdam, Mathematisch Centrum 1978. 184 S., Dfl. 23.–. ISBN 90‐6196‐166‐1	1980	Wolfgang Tutschke
+	Reduction of the problem of linear conjugation for first order nonlinear elliptic systems in the plane to an analogous problem for holomorphic functions	1980	Wolfgang Tutschke
+	On the error in the approximate solution of boundary value problems of nonlinear first order differential equations in the plane	1978	Josef Naas Wolfgang Tutschke
+	Konstruktion von Lösungen gewisser spezieller elliptischer Differentialgleichungen zweiter Ordnung (in der Ebene) durch Zurückführung auf die inhomogene C<scp>AUCHY</scp>‐R<scp>IEMANN</scp>sche Differentialgleichung	1978	Wolfgang Tutschke
+	Partielle komplexe Differentialgleichungen in einer und in mehreren komplexen Variablen	1977	Wolfgang Tutschke
+	Die neuen Methoden der komplexen Analysis und ihre Anwendung auf nichtlineare Differentialgleichungssysteme	1976	Wolfgang Tutschke
+	Über die globale Lösung der konjugiert‐komplexen BELTRAMIschen Differentialgleichung mittels der NEUMANNschen Reihe	1976	Wolfgang Tutschke
+	Komplexe Analysis und ihr Allgemeinheitsgrad	1976	Josef Naas Wolfgang Tutschke
+	Lösung nichtlinearer partieller Differentialgleichungssysteme erster Ordnung in der Ebene durch Verwendung einer komplexen Normalform	1976	Wolfgang Tutschke
+	Eine Erweiterung des Hartogsschen Stetigkeitssatzes	1976	Wolfgang Tutschke
+	Faktorisierung von Lösungen partieller komplexer Differentialungleichungen mit Hilfe eines holomorphen und eines von Null verschiedenen Faktors	1975	Wolfgang Tutschke
+	Lösungen partieller komplexer Differentialgleichungen in mehreren komplexen Variablen mit vorgeschriebenem Hauptteil	1974	Wolfgang Tutschke
+	Neue Fragestellungen der ein- und mehrdimensionalen komplexen Analysis und geometrische Anwendungen	1973	Wolfgang Tutschke
+	Neue Fragestellungen der ein- und mehrdimensionalen komplexen Analysis und geometrische Anwendungen	1973	Wolfgang Tutschke
+	Konstruktion von globalen Lösungen mit vorgeschriebenen Singularitäten bei partiellen komplexen Differentialgleichungssystemen	1972	Wolfgang Tutschke
+	Die CAUCHYsche Integralformel für morphe Funktionen mehrerer komplexer Variabler	1972	Wolfgang Tutschke
+	Die Methode der Variation der Konstanten bei Systemen linearer partieller komplexer Differentialgleichungen	1972	Wolfgang Tutschke
+	WEIERSTRASS‐Darstellungen und τ‐Isotropie	1971	Wolfgang Tutschke
+	Optimale Fehlerschranken für die Lösung von Differentialgleichungssystemen erster Ordnung bei Verwendung von Funktionstafeln	1971	Wolfgang Tutschke
+	Kurze Mitteilung von neuen Ergebnissen über morphe Differentialgeometrie	1970	Josef Naas Wolfgang Tutschke Siegfried Gähler Werner Gähler Ralf Komin Gert Kneis
+	Globale Konstruktion von Stammfunktionen im verallgemeinerten Sinn zu komplexwertigen Funktionen	1970	Wolfgang Tutschke
+	II Über komplexe Krümmung und Windung für Flächen	1970	Josef Naas Wolfgang Tutschke
+	Über die Fortsetzung von Funktionen mehrerer Variabler ins Komplexe	1970	Wolfgang Tutschke
+ PDF Chat	Über eine spezielle Form des Maximumprinzips für holomorphe Funktionen in Zusammenhang mit einem Satz von Rossberg	1970	Wolfgang Tutschke
+	Geometrie und komplexe Differentiationen II. Modelle komplexer Differentialgeometrien	1969	Josef Naas Wolfgang Tutschke
+	Geometrie und komplexe Differentiationen I. Verallgemeinerungen holomorpher Strukturen, insbesondere auf den Sphären <i>S</i><sup>2<i>n</i></sup>	1969	Johanna Nääs Wolfgang Tutschke
+	ON AN ALTERED FIRST BOUNDARY PROBLEM FOR NONSELFADJOINT PARTIAL DIFFERENTIAL EQUATIONS OF ELLIPTIC TYPE	1967	Wolfgang Tutschke
+	Zusammenhänge der Funktionentheorie mit der Topologie	1967	Wolfgang Tutschke
+	Geometrische Eigenschaften Regulärer Funktionen	1967	Wolfgang Tutschke
+	Ausblick auf Weitere Fragestellungen der Funktionentheorie	1967	Wolfgang Tutschke
+	Grundlagen der Funktionentheorie	1967	Wolfgang Tutschke
+	Komplexwertige Funktionen	1967	Wolfgang Tutschke
+	Die Riemannsche Zahlenkugel	1967	Wolfgang Tutschke
+	Über eine Verschärfung der Aussage des Satzes von Rouché	1966	Wolfgang Tutschke
+	Zur Theorie der parameterabh�ngigen Differentialformen	1966	Wolfgang Tutschke
+	Über einen Stetigkeitsbegriff für Kurven	1966	Wolfgang Tutschke
+	Über ein Randwertproblem für die Richtungen der Niveaulinien harmonischer Funktionen	1963	Wolfgang Tutschke
+	Eine Bemerkung zu einer Abschätzung von O. ZAUBEK für die Nullstellen von Polynomen	1963	Wolfgang Tutschke
+	Über periodische Lösungen nicht notwendig selbstadjungierter elliptischer Differentialgleichungssysteme in mehrfach‐zusammenhängenden Gebieten	1963	Wolfgang Tutschke
+	Eine Verallgemeinerung der Betragsfunktion im Zusammenhang mit einer Klasse von Differentialoperatoren auf Riemannschen Flächen	1962	Wolfgang Tutschke
+	Potentialfunktionen und verwandte Funktionen auf berandeten RIEMANNschen Flächen	1960	Wolfgang Tutschke

Common Coauthors

Coauthor	Papers Together
Josef Naas	9
Rudolf Heersink	6
Harkrishan Lal Vasudeva	6
Le Hung Son	5
Hung Son Le	3
Claudio Withalm	3
Carmen Judith Vanegas	3
Ali Seif Mshimba	3
H. Florian	2
Reiner Kühnau	2
M. B. Balk	2
Johanna Nääs	1
З. Д. Усманов	1
Chung Chun Yang	1
Nguyen Thanh Van	1
Sapna Jain	1
Alain Escassut	1
Gert Kneis	1
Kiyoshi Asano	1
V. Vassilenko	1
Ü. Yüksel	1
Jose Ernie C. Lope	1
Siegfried Gähler	1
Le Thu Hoai	1
Norbert Ortner	1
Werner Gähler	1
Ralf Komin	1
Jürgen Püngel	1
G.F. Mandzhavidze	1
Franz Schnitzer	1
G. Manjavidze	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+	Solution of Initial Value Problems in Classes of Generalized Analytic Functions	1989	Wolfgang Tutschke	15
+	Generalized Analytic Functions	2006	I. Vekua	14
+	Theory of pseudo-analytic functions	1953	Lipman Bers	12
+	An Elementary Proof of the Cauchy-Kowalevsky Theorem	1985	Wolfgang Walter	12
+	An Elementary Proof of the Cauchy-Kowalevsky Theorem	1985	Wolfgang Walter	11
+	Partielle komplexe Differentialgleichungen in einer und in mehreren komplexen Variablen	1977	Wolfgang Tutschke	11
+ PDF Chat	Über das Anfangswertproblem Partieller Differentialgleichungen	1941	Mitio Nagumo	8
+ PDF Chat	Constructive Methods for Elliptic Equations	1974	Robert P. Gilbert	8
+	Topics in Nonlinear Functional Analysis	2001	Louis Nirenberg	8
+	Basic Linear Partial Differential Equations	1975	François Trèves	7
+	Functional-Analytic And Complex Methods, Their Interactions, And Applications To Partial Differential Equations	2001	H. Florian Wolfgang Tutschke Norbert Ortner Franz Schnitzer	7
+	An Example of a Smooth Linear Partial Differential Equation Without Solution	1957	Hans Lewy	7
+	Interior estimates for elliptic systems of partial differential equations	1955	Avron Douglis Louis Nirenberg	5
+	Erratum: An Example of a Smooth Linear Partial Differential Equation Without Solution	1958	Hans Lewy	5
+	ASSOCIATED PARTIAL DIFFERENTIAL OPERATORS – APPLICATIONS TO WELL- AND ILL-POSED PROBLEMS	2004	Wolfgang Tutschke	5
+	THE METHOD OF WEIGHTED FUNCTION SPACES FOR SOLVING INITIAL VALUE AND BOUNDARY VALUE PROBLEMS	2001	Wolfgang Tutschke	4
+	Complex Analytic Coordinates in Almost Complex Manifolds	1957	August Newlander Louis Nirenberg	4
+	A note on a theorem of Nirenberg	1977	Takaaki Nishida	4
+	Generalized Analytic Functions.	1964	Avner Friedman I. N. Vekua	4
+	Complex Methods for Partial Differential Equations	1999	Wolfgang Tutschke	4
+	Partial Differential Equations	1982	Fritz John	4
+	An elementary approach to Clifford analysis	1995	Wolfgang Tutschke	4
+	Partial Differential Equations in Clifford Analysis	1999	Elena Obolashvili	4
+	A function‐theoretic approach to elliptic systems of equations in two variables	1953	Avron Douglis	3
+ PDF Chat	Similarity principle of the generalized Cauchy-Riemann equations for several complex variables	1971	Akira Koohara	3
+	Generalized Analytic Functions	1988	Yu. L. Rodin	3
+	Boundary value problems for elliptic equations and systems	1990	Wen Guo Heinrich Begehr	3
+	First Order Elliptic Systems - A Function Theoretic Approach	1983	Robert P. Gilbert James L. Buchanan	3
+	Introduction to Complex Analysis in Several Variables	2005	Volker Scheidemann	3
+	Clifford Algebras Depending on Parameters and Their Applications to Partial Differential Equations	2008	Wolfgang Tutschke Carmen Judith Vanegas	3
+	The cauchy–Kovalevska theorem for pseudoholomorphic functions in the sense of L. Bers	1983	Wolfgang Tutschke Claudio Withalm	3
+	Solution of initial value problems for first order systems using matrix notation	1999	Wolfgang Tutschke	3
+	A decomposition theorem for solving initial value problems in associated spaces	1994	Rudolf Heersink Wolfgang Tutschke	3
+ PDF Chat	Compactness of an Integro-Differential Operator of Cauchy-Kovalevskaya Theory	1996	Wolfgang Tutschke Harkrishan Lal Vasudeva	3
+	Estimates near the boundary for solutions of elliptic partial differential equations satisfying general boundary conditions. I	1959	Shmuel Agmon Avron Douglis Louis Nirenberg	3
+	Partial Differential Equations of Elliptic Type	1970	Carlo Miranda	3
+ PDF Chat	An abstract form of the nonlinear Cauchy-Kowalewski theorem	1972	Louis Nirenberg	3
+	Functional Analytic Methods in Complex Analysis and Applications to Partial Differential Equations	1995		3
+	Overdetermined Systems of Second Order Elliptic Equations in Several Complex Variables	1998	Heinrich Begehr Abduhamid Džhuraev	2
+	First Order Differential Operators Associated to the Cauchy—Riemann Operator in the Plane	2003	Le Hung Son Wolfgang Tutschke	2
+	Integral equations and their applications	2008	Witold Pogorzelski	2
+ PDF Chat	Partial Differential Equations	1988	Shiing-Shen Chern	2
+	Functionals of Finite Riemann Surfaces	1955	M. Schiffer D. C. Spencer	2
+	Elliptic systems in the plane	1979	Wolfgang L. Wendland	2
+	On the Optimization of the Set of Definition of Operators in Applications of the Contraction-Mapping Principle to Differential Equations	1998	S. Graubner	2
+	Geometrie und komplexe Differentiationen II. Modelle komplexer Differentialgeometrien	1969	Josef Naas Wolfgang Tutschke	2
+	On integration and differentiation of generalized analytic functions	1996	Wolfgang Tutschke Claudio Withalm	2
+	Lösung nichtlinearer partieller Differentialgleichungssysteme erster Ordnung in der Ebene durch Verwendung einer komplexen Normalform	1976	Wolfgang Tutschke	2
+	On the Local Behavior of Solutions of Non-Parabolic Partial Differential Equations: II. The Uniqueness of the Green Singularity	1954	Philip Hartman Aurel Wintner	2
+	Quaternionic Analysis and Elliptic Boundary Value Problems	1990	Klaus Gürlebeck Wolfgang Sprößig	2