Gmelin Handbook of inorganic chemistry: Sc, Y, La-Lu —Rare earth elements, Part D3, Coordination compounds : by E.R. Birnbaum, J.H. Forsberg and Y. Marcus, Springer, Berlin, Heidelberg, New York, 8th ed., 1979, XIV + 324 pp., price DM 793.00, ca. USS 467.90, system No. 39, ISBN 3-540-93432-4 (Berlin, Heidelberg), 0-387-93432-4 (New York).