@book{18994,
	author = {Kossakowski, January},
	title = {Elementy dyskretne RC :},
	publisher = {Wydaw. Min. Obrony Narodowej,},
	year = {1979.},
	address = {Warszawa :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=18994}
}