[ 1] H aym anW K. M erom orphic Func tions[M ]. Oxford: C larendon Press, 1964.
[ 2] Yang L. Va lue D istr ibution Theo ry[M ]. Berlin: Springer-V erlag, 1993.
[ 3] Fang M L, XuW S. Un icity theo rem fo rme romo rph ic functions that share tw o fin ite sets CM [ J]. JN an jingNo rm al University: Na tura l Sc ience, 1999, 22( 1): 11-15.
[ 4] Y ang C C, H uaX H. Un iqueness and va lue-sharing of me romo rph ic functions[ J]. Ann Acad Sci FennM ath, 1997, 22: 395-406.
[ 5] Fang M L, Q iu H L. M erom orph ic func tions that share fix ed-po ints[ J]. JM a th Ana l and App,l 2000, 268: 426-439.
[ 6] Yang C C. On defic ienc ies of d ifferentia l po lynom ia ls II[ J]. M ath Z, 1972, 125: 107-112.
[ 7] Zhuang X T, Yang C C. F ix-Po ints and Fac to riza tion Theo ry o fM e romo rph ic Functions[M ]. Be ijing: Be ijing Un iversity Press, 1988.
[ 8] M ues E, Re indersM. Functions shar ing one va lue and unique rang e sets[ J]. KodaiM ath, 1995, 18: 515-522.
[ 9] Y iH X, Yang C C. Un ic ity Theory o fM eromo rph ic Functions[M ]. Ber lin: Sc ience Press, 1995.