@book{42789,
	author = {OSTALCZYK, Piotr},
	title = {Discrete-variable functions /},
	publisher = {TU,},
	year = {2001.},
	series = {A Series of Monographs / Technical University of Łódź},
	address = {Lodz :},
	note = {Nr na grzb. oznacza kolejną poz. wydawniczą.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=42789}
}