1. H. Klinkrad, Space Debris Mitigation Activities at ESA, February 2011.
2. The Kessler Syndrome: implications to future space operations;Kessler,2010
3. H. Klinkrad, N.L. Johnson, Space debris environment remediation concepts, in: NASA-DARPA International Conference on Orbital Debris Removal, Chantilly, VA, December 8–10, 2009.
4. H. Klinkrad, N.L. Johnson, Mass removal from orbit: incentives and potential solutions, in: 1st European Workshop on Active Debris Removal, July 22, 2010.
5. S. Fukushige, Y. Akahoshi, Y. Kitazawa, T. Goka, Comparison of debris environment models: ORDEM2000, MASTER2001 and MASTER2005, in: IHI Engineering Review, vol. 40, no. 1, 2007, pp. 31–41.