We deal with the uniqueness of analytic functions in the unit disc sharing four distinct values and obtain two theorems improving a previous result given by Mao and Liu (2009).
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap103-3-4, author = {Hong-Yan Xu and Ting-Bin Cao}, title = {Analytic functions in the unit disc sharing values in a sector}, journal = {Annales Polonici Mathematici}, volume = {105}, year = {2012}, pages = {263-275}, zbl = {1276.30047}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap103-3-4} }
Hong-Yan Xu; Ting-Bin Cao. Analytic functions in the unit disc sharing values in a sector. Annales Polonici Mathematici, Tome 105 (2012) pp. 263-275. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap103-3-4/