@book{551656,
	author = {Gertsbakh, I. B.},
	title = {Models of preventive maintenance /},
	publisher = {North-Holland Pub. Co. ;},
	year = {1977.},
	address = {Amsterdam :},
	note = {Translation of Modeli profilaktiki.},
	url = {http://www.loc.gov/catdir/toc/fy0712/76007931.html}
}