Emission and scattering techniques : (ed. Peter Day): Proceedings of the NATO Advanced Study Institute, Alghero, Sardinia, Italy, 14–25 September 1980. Volume 73 of Series C (Mathematical and Physical Sciences) of NATO Advanced Study Institutes Series. 390 pages. ISBN 90-277-1317-0. Cloth Hfl. 110.–D. Reidel Publishing Company, Dordrecht/Boston/London 1981.