@book{40000,
	author = {WOLNY, Andrzej},
	title = {Current breaking through commutation /},
	publisher = {Wydaw. Politechniki Gdańskiej,},
	year = {2001.},
	address = {Gdańsk :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=40000}
}