Landolt - Bornstein Numerical data and functional relationships in science and technology; Gr.2; V.8 ed. by K. H. Hellwege and A. M. Hellwege - Berlin Springer-Verlag 1976 - xxxvi, 1163p. incl.bibl. ISBN: 3540074414 Dewey Class. No.: 530.0212 / N61.2.8-1 "SER"