@book{81510,
	author = {Abelson, Harold. and Sussman, Gerald Jay.},
	title = {Structure and interpretation of computer programs /},
	publisher = {MIT Press ;},
	year = {1996.},
	address = {Cambridge, Mass. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/mh022/96017756.html}
}