@book{56545,
	author = {Crawford, James A.},
	title = {Advanced phase-lock techniques /},
	publisher = {Artech House,},
	year = {cop. 2008.},
	address = {Boston,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=56545}
}