@book{18124,
	author = {VEKUA, I. N.},
	title = {Osnovy tenzornogo analiza i teorii kovariantov /},
	year = {1978.},
	address = {Moskva,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=18124}
}