1. Accidents in North American Mountaineering 1979,1979
2. Accidents in North American Mountaineering 1985,1985
3. Mechanical analysis of survival in falls from heights of fifty to one hundred and fifty feet;De Haven;War Med,1942
4. Man's survivability of extreme forces in free-fall impact;Snyder,1971
5. Mountaineering accidents in the Sierra Nevada;McClennan;Am J Sports Med,1983