@book{108439,
	author = {Heier, Siegfried,},
	title = {Grid integration of wind energy :},
	publisher = {Wiley,},
	year = {2014.},
	address = {Chichester, England :},
	edition = {Third edition.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10862623}
}