@article{paperid:1039759,
author = {Hassanzadeh, Mitra and ,  and Kayvanfar, Saeed},
title = {On the Nilpotency of a Pair of Groups},
journal = {Southeast Asian Bulletin of Mathematics},
year = {2013},
volume = {37},
number = {37},
month = {December},
issn = {0129-2021},
pages = {67--77},
			numpages = {10},
keywords = {Pair of groups; Nilpotent group; Central series; Hopfian; Residually nilpotent.},
}