α型螺形映照与Roper-suffridge算子
刘浩, 吴中林, 刘爱超
The Spirallike Mapping of Type a and the Generalized Roper-Suffridge Operator 
LIU Hao, WU Zhong-lin, LIU Ai-chao
数学季刊 . 2007, (3): 436 -443 .