@article{paperid:1033027,
author = {Erfanian, Ahmad and Tolue Haghighi, Behnaz},
title = {Relative non nil n-graph of finite groups},
journal = {ScienceAsia},
year = {2012},
volume = {38},
number = {2},
month = {June},
issn = {1513-1874},
pages = {201--206},
			numpages = {5},
keywords = {nilpotent groups; nth nilpotency degree},
}