@book{13206,
	author = {MICHLIN, S.},
	title = {Variacionnye metody v matematiceskoj fizike /},
	publisher = {"NAUKA",},
	year = {1970.},
	address = {Moskva :},
	edition = {Izdanie 2 pererabotannoe i dopolnennoe.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=13206}
}