@book{19413,
	author = {BARTOS, Bela},
	title = {Nonlinear programming :},
	publisher = {North-Holland Publishing Company,},
	year = {1975.},
	address = {Amsterdam :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=19413}
}