9Starosolszky O, Melder O M. Hydrology of Disasters[M]. London: WMO, 1989.
10Riebsarae W E, Changnon S A Jr, Karl T R. Drought and Natural Resources Management in the United States, Impacts and Implications of the 1987- 1989 Drought[M]. Boulder: Westview Press, 1991.
