1. Adaptive Environments Center: A Consumer's Guide to Home Adaptation. Boston, Adaptive Environments Center
2. Kellogg International Health and Aging Program Report. The prevention of falls in later life;Andres;Dan Med Bull,1987
3. Environmental factors associated with stair accidents by the elderly;Archea;Clin Geri-atr Med,1985
4. A longitudinal study of falls in an elderly population, II. Some circumstances of falling;Ashley;Age Ageing,1977
5. The Accessible Housing Design File,1991