1. Axler, S.: Harmonic functions from a complex analysis viewpoint. Am. Math. Mon. 93, 246–258 (1986)
2. Cao, T.B., Yi, H.X., Xu, H.Y.: On the multiple values and uniqueness of meromorphic functions on annuli. Comput. Math. Appl. 58, 1457–1465 (2009)
3. Cao, T.B., Deng, Z.S.: On the uniqueness of meromorphic functions that share three or two finite sets on annuli. Proc. Indian Acad. Sci. 122(2), 203–220 (2012)
4. Khrystiyanyn, A.Y., Kondratyuk, A.A.: On the Nevanlinna theory for meromorphic functions on annuli, I. Mat. Stud. 23(01), 19–30 (2005)
5. Khrystiyanyn, A.Y., Kondratyuk, A.A.: On the Nevanlinna theory for meromorphic functions on annuli. II. Mat. Stud. 24(02), 57–68 (2005)