@book{2325,
	author = {Das, B.C. and Mukherjee, B.N.},
	title = {Differential Calculus /},
	publisher = {U.N. Dhur & Sons,},
	year = {c 2012.},
	address = {Kolkata :},
	edition = {51st Rev. ed.},
	note = {Includes index.}
}