@book{65006,
	author = {Vasishtha, A.R. and Rastogi, Sugam},
	title = {Differential calculus as per U.P. unified syllabus w.e.f. 2011-2012 /},
	publisher = {Krishna Prakashan},
	year = {2011},
	series = {Made easy},
	address = {Meerut}
}