1. Ahlfors Lars: Complex Analysis. McGraw-Hill, Second Edition (1966)
2. Oscar S. Adams, Elliptic Functions Applied to Conformal World Maps, U.S. Coast and Geodetic Survey Special Publ. No.112, Washington, 1925.
3. E. Brieskorn and H. Knörrer, Plane Algebraic Curves, Birkhäuser, 1986.
4. Annalisa Calini and Joel Langer, Schwarz reflection geometry I: continuous iteration of reflection, Math. Z., 244 (2003) pp. 775–804.
5. Annalisa Calini and Joel Langer, Schwarz reflection geometry II: local and global behavior of the exponential map, Exp. Math., 16 (2007), No. 3, pp. 321–346.