1. Burton I. Kates R.W. White G.F. The Environment as Hazard. 1978
2. Snow-avalanche hazards in Glacier National Park, Montana: Meteorologic and climatologic aspects;Butler;Physical Geography,1986a
3. Butler D.R. Spatial and temporal aspects of the snow avalanche hazard, Glacier National Park, Montana, U.S.A., in: Proceedings, International Snow Science Workshop 1986b
4. A history of highmagnitude snow avalanches, southern Glacier National Park, Montana, U.S.A.,;Butler;Mountain Research and Development,1985
5. Natural disaster-long-range impact on human response to future disaster threats,;Hanson;Environment and Behavior,1979