@book{48128,
	author = {Hopper, Earl. and ebrary, Inc.},
	title = {Traumatic experience in the unconscious life of groups},
	publisher = {Jessica Kingsley Publishers,},
	year = {2003.},
	series = {International library of group analysis ;},
	address = {Philadelphia, PA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10064470}
}