@book{62958,
	author = {Madrigal, Marcelino. and Porter, Kevin. and World Bank.},
	title = {Operating and planning electricity grids with variable renewable generation},
	publisher = {World Bank,},
	year = {c2013.},
	series = {A World Bank Study},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10672815}
}