1. [2] Bergin, C. (2015) Debris from old Russian satellite forced ISS crew into contingency ops. [Online] Available at: www.nasaspaceflight.com/2015/07/debris-russian-satellite-iss-crew-contingency-ops/; Retrieved June 2018.
2. Improved orbit predictions using two-line elements
3. Orbital debris–debris collision avoidance
4. [3] Phipps C. R. (1994) LISK-BROOM: A laser concept for clearing space junk, in AIP Conference Proceedings, 318, Laser Interaction and Related Plasma Phenomena, 11th International Workshop, October, 1993, Monterey, CA, Miley, G., ed., New York: American Institute of Physics, 466–468.
5. BIO-INSPIRED MODELLING AND ACTIVE CONTROL OF THE SIMULATION OF HUMAN WALKING DYNAMICS