References
- Balk , MB . 1991 . Polyanalytic Functions , Berlin : Akademie-Verlag .
- Begehr , H . 1994 . Complex Analytic Methods for Partial Differential Equations. An Introductory Text , Singapore : World Scientific .
- Begehr , H . 2002 . Orthogonal decompositions of the functions space . . Journal für die Reine und Angewandte Mathematik , 549 : 191 – 219 .
- Begehr , H . 2002 . Integral representations in complex, hypercomplex and Clifford analysis. . Integral Transforms and Special Functions , 13 : 223 – 241 .
- Begehr , H and Hile , G.N. 1997 . A hierarchy of integral operators. . Rocky Mountain Journal of Mathematics , 27 : 669 – 706 .
- Begehr , H and Kumar , A . 1993 . Bi-analytic functions of several variables. . Complex Variables, Theory and Applications , 24 : 89 – 106 .
- Begehr , H and Vanegas , CJ . 2006 . Iterated Neumann Problem for the Higher Order Poisson Equation . Mathematische Nachrichten , 279 : 38 – 57 .
- Bitsadze , AV . 1948 . About the uniqueness of the Dirichlet problem for elliptic partial differential equations . Uspekhi Mat. Nauk 3 , 6 ( 28 ) : 211 – 212 . (Russian)
- Gakhov , FD . 1966 . Boundary Value Problems , Oxford : Pergamon .
- Hua , LK , Lin , W and Wu , C-Q . 1985 . Second Order Systems of Partial Differential Equations in the Plane , London : Pitman .
- Vekua , IN . 1962 . Generalized Analytic Functions , Oxford : Pergamon .