中国科学院数学与系统科学研究院期刊网
AMS
Schwarz–Pick Estimates for Bounded Holomorphic Functions in the Unit Ball of Cn
Zhi Hua CHEN, Yang LIU
Acta Mathematica Sinica . 2010, (5): 901 -908 .  DOI: 10.1007/s10114-010-7487-y