@book{156284,
	author = {Acharjya, D. P. and Sreekumar. and ebrary, Inc.},
	title = {Fundamental approach to discrete mathematics},
	publisher = {New Age International (P) Ltd., Publishers,},
	year = {c2009.},
	address = {New Delhi :},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10318706}
}