1. W. K. Hayman, Meromorphic functions, Oxford Mathematical Monographs, Clarendon Press, Oxford 1964.
2. I. Laine, Nevanlinna theory and complex differential equations, De Gruyter Studies in Mathematics, 15. Walter de Gruyter & Co., Berlin, 1993.
3. C. C. Yang and H. X. Yi, Uniqueness theory of meromorphic functions, Mathematics and its Applications, 557. Kluwer Academic Publishers Group, Dordrecht, 2003.
4. A. Goldberg and I. Ostrovskii, Value distribution of meromorphic functions, Transl. Math. Monogr., Vol. 236, Amer. Math. Soc., Providence RI, 2008.
5. A. A. Kondratyuk and I. Laine, Meromorphic functions in multiply connected domains, Fourier series methods in complex analysis, Univ. Joensuu Dept. Math. Rep. Ser., Vol. 10, Univ. Joensuu, Joensuu, 2006, pp. 9-111.