6Klote,J. H. Feasibility of Fire Evacuation by Elevators at FAA Control Towers[R]. NISTIR 5445, Gaithersburg, Maryland: Building and Fire Research Laboratory, 1994
7Elevators Seen as Playing Hi-Rise Fire Evacuation Role [OL]. NIST. http://www. nist. gov/public_affairs, 2007 - 10 - 25