1. Gregory FD. Guidelines and assessment procedures for limiting orbital debris. NASA Safety Standard 1740.14, NASA Headquarters, Washington, DC; August 1995.
2. OSTP (Office of Science and Technology Policy). US strategy on orbital debris, Washington, DC; December 2000.
3. Frank MV, Weaver MA, Baker RL. A probabilistic paradigm for calculating reentry debris casualty area. European safety and reliability conference, 2001, Torino; September 2001.
4. Weaver MA, et al. Probabilistic estimation of reentry Debris area. Third European conference on space debris, ESOC, Darmstadt, Germany; March 2001.
5. Refling O, et al. Review of orbital reentry risk predictions. The Aerospace Corporation, ATR-92(2835)-1; 15 July 1992.