1. A history of walkway slip resistance at the National Bureau of Standards;Adler,1979
2. Slips, trips and falls—Working surfaces and industrial stairs;Allcott,1979
3. Measuring surface frictional properties using the British pendulum tester;American Society for Testing Materials;ANSI/ASTM E 303-74,1974
4. Static coefficient of friction of polish-coated floor surfaces as measured by the James Machine;American Society for Testing Materials;ASTM D 2047-75,1975
5. Static coefficient of friction of shoe sole and heel materials as measured by the James Machine;American Society for Testing Materials;ANSI/ASTM F 489-77,1977