1. Lars V. Ahlfors, Complex Analysis, 3rd ed., McGraw-Hill, New York, 1979.
2. L. Bieberbach, Conformal Mapping, Chelsea, New York, 1953.
3. Andrew Browder, Introduction to Function Algebras, Benjamin, New York, 1969.
4. John B. Conway, Functions of One Complex Variable, 2nd ed., Springer-Verlag, New York, 1978.
5. R. Courant, Dirichlet's Principle, Conformal Mapping, and Minimal Surfaces, Interscience, New York, 1950.