1. Space Track Organization, Satellite Catalog Data, 〈https://www.space-track.org〉, July 2014.
2. IADC Steering Group & Working Group 4 (Mitigation), IADC Space Debris Mitigation Guidelines, Document IADC-02-01 & Revision 1, Inter-Agency Space Debris Coordination Committee (IADC), 2002–2007.
3. European Space Debris Safety and Mitigation Standard Working Group, European Code of Conduct for Space Debris Mitigation, EDMSWG, 2004.
4. International Cooperation in the Peaceful Uses of Outer Space, Resolution A/RES/62/217 adopted by the General Assembly, in: Proceedings of the 62nd Session, Agenda Item 31, 79th Plenary Meeting 2007, United Nations, New York.
5. Committee on the Peaceful Uses of Outer Space (COPUOS), Space Debris Mitigation Guidelines of the Committee on the Peaceful Uses of Outer Space, Office for Outer Space Affairs 2010, United Nations, Vienna.