@book{3357,
	author = {Cramer, Christopher J.,},
	title = {Essentials of computational chemistry : theories and models},
	publisher = {Wiley,},
	year = {c2004.},
	address = {Chichester, West Sussex, England ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/wiley051/2004015537.html}
}