Recent results and perspective instrumental developments in X- and gamma-ray astronomy : proceedings of the Topical Meeting of the COSPAR Interdisciplinary Scientific Commission E (Meetings E4 and E8) of the COSPAR Twenty-eighth Plenary Meeting held in The Hague, The Netherlands, 25 June - 6 July 1991
edited by L. Bassani, G. G. C. Palumbo and G. Vedrenne
Bok Engelsk 1991