1. Information provided by D. L. Margolies of NASA/GSFC
2. “The ACTIVE International Space Plasma-Wave Laboratory,” The Solar-Terrestrial Science Project of the Inter-Agency Consultative Group for Space Science, ESA SP-1107, November 1990, pp. 45–49
3. Aktivny-IK, Interavia Space Directory, 1992–93, pp. 149
4. NASDA handout at the CEOS WGD-10 Meeting in Annapolis MD, April 16–19, 1991
5. “Japan Delays Remote-Sensing Missions,” Space News, March 30/April 5, 1992, p. 9