中国科学院数学与系统科学研究院期刊网
AMS
Subgroup Separability of Certain Generalized Free Products of Nilpotent-by-finite Groups
Wei ZHOU, Goansu KIM
Acta Mathematica Sinica . 2013, (6): 1199 -1204 .  DOI: 10.1007/s10114-013-0547-3