1. Riemann boundary value problem for hyperanalytic functions;Abreu Blaya;Int. J. Math. Math. Sci.,2005
2. Complex Analytic Methods for Partial Differential Equations: An Introductory Text;Begehr,1994
3. The removability of singularities of analytic functions;Dolzhenko;Uspekhi Mat. Nauk,1963
4. Geometric Measure Theory;Federer,1969
5. Boundary Value Problems;Gakhov,1977