@book{71519,
	author = {Sengar, S.K},
	title = {Advanced calculus},
	publisher = {Cengage Learning India},
	year = {c.2011.},
	address = {New Delhi},
	edition = {-},
	url = {http://www.amazon.com/Advanced-Calculus-S-Sengar-Singh/dp/8131515400/ref=sr_1_1?ie=UTF8&qid=1455781712&sr=8-1&keywords=9788131515402}
}