@book{18126,
	author = {AVRIEL, Mordecai},
	title = {Nonlinear programming :},
	year = {1976.},
	address = {Englevood Cliffs,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=18126}
}