@book{205860,
	author = {Ackermann, Thomas,},
	title = {Wind power in power systems /},
	publisher = {John Wiley & Sons,},
	year = {2012.},
	address = {Hoboken :},
	edition = {Second edition},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781119941842}
}