@book{626,
	author = {Bansal, Raj K.},
	title = {Heterocyclic chemistry /},
	publisher = {New Age International Pvt Ltd Publishers,},
	year = {2005.},
	address = {New delhi},
	edition = {4th edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/812241706X/chopaconline-20}
}