中国科学院数学与系统科学研究院期刊网
The Geometric J(?)rgensen's Inequalities of M(?)bius Groups in Higher Dimensions
Yue Ping JIANG(1),Yu Ming CHU(
Acta Mathematica Sinica, Chinese Series . 2002, (5): 1011 -101 .  DOI: 10.12386/A2002sxxb0131