@book{37423,
	author = {Rossi, Giuseppe. and Vega, Teodoro. and SpringerLink (Online service)},
	title = {Methods and Tools for Drought Analysis and Management},
	publisher = {Springer Netherlands,},
	year = {2007.},
	series = {Water Science and Technology Library,},
	address = {Dordrecht :},
	url = {http://dx.doi.org/10.1007/978-1-4020-5924-7}
}