@book{21044,
	author = {BOERNER, Roman},
	title = {Dortstellungen von gruppen /},
	publisher = {Springer -Verlag,},
	year = {1967.},
	address = {Berlin :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=21044}
}