In this paper, we deal with the problem of uniqueness of meromorphic functions sharing three values, and prove some results which are improvements and extensions of many known theorems. Examples are provided to show that the results in this paper are sharp.
"Unicity theorems for meromorphic functions." Proc. Japan Acad. Ser. A Math. Sci. 78 (7) 152 - 156, Sept. 2002. https://doi.org/10.3792/pjaa.78.152