@book{48127,
	author = {Tubert-Oklander, Juan. and Hern?andez de Tubert, Reyna. and ebrary, Inc.},
	title = {Operative groups},
	publisher = {Jessica Kingsley Publishers,},
	year = {2004.},
	series = {International library of group analysis ;},
	address = {London ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10064469}
}