1. W.H. Gray, Likely increase in intense landfalling hurricanes in the coming decades, Paper presented at the 12th. Annual Hurricane Conference, Dallas, TX, 1990.
2. J.E. Minor, J.R. McDonald, K.C. Mehta, The tornado: an engineering-oriented perspective, National Oceanic and Atmospheric Administration Technical Memorandum ERL NSSL-82, US Department of Commerce, 1977.
3. The hurricane disaster potential scale;Simpson;Weatherwise,1974
4. The Hurricane and its Impact;Simpson,1981
5. G.C. Hart, Estimation of structural damage due to tornadoes, Proceedings of the Symposium on Tornadoes: Assessment of Knowledge and Implications for Man, Texas Tech University, Lubbock, 1976, pp. 645-665.