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- Sterken, C. (Christiaan) (11)
- Aerts, Conny (1)
- De Groot, Mart, 1938- (1)
- Duerbeck, Hilmar W., 1948- (1)
- European Astronomical Society (1)
- Groot, M (1)
- Hearnshaw, J. B. (1)
- International Astronomical Union. Symposium (1)
- Kurtz, Donald W. (1)
- Milone, E. F., 1939- (1)
- Valls-Gabaud, David (1)
- Vrije Universiteit Brussel (1)