1. Snow-avalanche hazards, southern Glacier National Park, Montana: the nature of local knowledge and individual responses;Butler;Disasters,1987
2. The geography of rockfall hazards in Glacier National Park, Montana;Butler;The Geographical Bulletin,1990
3. Butler , D. R. 1997 A major snow-avalanche episode in northwest Montana, February, 1996. Quick Response Report 100, Natural Hazards Research and Applications Information Center, University of Colorado at Boulder. Available at http://www.colorado.edu/hazards/qr/qr100.html last accessed 29 October 2003
4. A history of high-magnitude snow avalanches, southern Glacier National Park, Montana, U. S. A.;Butler;Mountain Research and Development,1985
5. Characteristics of two landslide-dammed lakes in a glaciated alpine environment;Butler;Limnology and Oceanography,1993