1. Bargmann D. et al.: Families of meromorphic functions avoiding continuous functions. J. Anal. Math. 79, 379–387 (1999)
2. C. Caratheodory, Theory of Functions of a Complex Variable, Chelsea, 1954.
3. Chang J. M., Fang M. L., Zalcman L.: Composite meromorphic functions and normal families. Proc. Roy. Soc. Edinburgh, Ser. A, 139, 57–72 (2009)
4. Chen H. H., Lappan P.: Spherical derivative, higher derivatives and normal families. Adv. Math.(China) (6) 25, 517–524 (1996)
5. Fang M. L., Hong W.: Some results on normal family of meromorphic functions. Bull. Malays. Math. Sci. Soc. (2) 23, 143–151 (2000)