6Kanta L R. Vulnerability Assessment of Water Supply Systems for Insufficient Fire Flows[D]. Texas:Texas A&M Univer- sity, 2006.
7Hokstad P, Rostum J, Sklet S, et al. Methods for risk analysis of drinking water systems from source to tap[R].S : Techneau, 2009.
8Timmerman P. Vulnerability, Resilience and the Collapse of Society : A Review of Models and Possible Climatic Applica- tions[M]. Toronto : Institute for Environmental Studies, University of Toronto, 1981 : 1 - 10.
9Peng L H. Hierarchical Risk Assessment of Water Supply Systems[D]. Loughborough: Loughborough University, 2007.
10US Congress. Public health security and bioterrism preparedness and response act of 2002 [OL]. [ 2002 -06 - 12]. http ://www. epa. gov/safewater/watersecurity/pubs/security_act, pdf.