High-energy astrophysics and cosmology : proceedings of the COSPAR/IAU Symposium held in Rojen, Bulgaria, 18-23 July 1983 /
COSPAR/IAU Symposium(1983 :Rojen, Bulgaria)cn
Bignami, G. F.
Sunyaev, R. A.
Oxford ; New York : Pergamon Press,
1984.
Nuclear astrophysics
Cosmology
Gamma ray astronomy
X-ray astronomy