@book{54152,
	author = {Vuorinen, Asko.},
	title = {Planning of optimal power systems /},
	publisher = {Ekoenergo Oy,},
	year = {2007.},
	address = {Espoo :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=54152}
}