1. American Society of Mechanical Engineers, 1994. Inspectors’ Manual for Escalators and Moving Walks, ASME A17.2.3.
2. Armstrong, D., 1996. Escalator Accident Hurts 22. The Boston Globe Online, February 22.
3. Anderson, S., Anderson, D., April 1997. Exhibit B Included within Petition Cp-97-1, http://www.cpsc.gov/cpscpub/pubs/ (online).
4. Slipping, tripping and falling accidents at work: a national picture;Buck;Ergonomics,1985
5. Fatal occupational injuries in Taiwan—relationship between fatality rate and age;Chi;Saf. Sci.,1997