New Problems in Astrometry
Physics of the Expanding Universe: Cracow School on Cosmology, Jodowy Dwor, September 1978 Poland (Lecture Notes in Physics)
Internal Kinematics and Dynamics of Galaxies (International Astronomical Union Symposia, 100)
Observational Cosmology Proceedings of the 124th Symposium of the International Astronomical Union, Held in Beijing, China, August 25–30, 1986
Non-Solar X- and Gamma-Ray Astronomy
Early Evolution of the Universe and its Present Structure (International Astronomical Union Symposia, 104)
Reference Coordinate Systems for Earth Dynamics Proceedings of the 56th Colloquium of the International Astronomical Union Held in Warsaw, Poland, September 8–12, 1980
The Stellar Populations of Galaxies (International Astronomical Union Symposia)
Galaxy Interactions at Low and High Redshift Proceedings of the 186th Symposium of the International Astronomical Union, Held at Kyoto, Japan, 26-30 August 1997
Examining the Big Bang and Diffuse Background Radiations