- COSPAR (4)
- International Astronomical Union. Colloquium (4)
- International Astronomical Union (3)
- Calame, O. (Odile), 1941- (1)
- Elsässer, Hans, 1929- (1)
- Fechtig, H., 1929- (1)
- International Association of Geodesy (1)
- Longair, M. S., 1941- (1)
- Warner, John Ward, 1944- (1)