@book{609,
	author = {Matin, Md. Abdul/ Chakraborty, Bidhubhushan and  Bivutivushon,Chakroborti and Motin, Md. Abdul and  Bivutivushon,Chakroborti},
	title = {Differential Calculas Part 1& 2},
	publisher = {Standard Publications},
	year = {c2015},
	address = {Dhaka},
	edition = {5th}
}