@book{205,
	author = {Gupta, J.B},
	title = {Pulse and Digital Switching Circuits /},
	publisher = {S K KATARIA & SONS,},
	year = {2010.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8188458872/chopaconline-20}
}