@book{106841,
	author = {Enochs, Edgar E. and Jenda, Overtoun M. G. and ebrary, Inc.},
	title = {Relative homological algebra},
	publisher = {Walter de Gruyter,},
	year = {2000.},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10585176}
}