@book{82027,
	author = {White, Jeffrey W. and Grace, Peter R.},
	title = {Modeling extremes of wheat and maize crop performance in the tropics :},
	publisher = {Centro Internacional de Mejoramiento de Maiz y Trigo,},
	year = {2000.},
	series = {Geographic information systems. Series 01-02},
	address = {México, D. F. :}
}