Volkov, E. A., Block method for solving the Laplace equation and for constructing conformal mappings / E. A. Volkov - Boca Raton, Fla. : CRC Press, 1994 - 227 p. ; 24 cm. references p. 220-224 ISBN: 0849394066 RM234.84 Subjects--Topical Terms: Conformal mappingHarmonic functions