1. 55War: J.C. Warf, status report, U.S. Dept. of Ordnance Research Project 683, Contract No. DA-04-495-Ord-421, 20 Jul (1955).
2. 56Bre: L. Brewer and O. Krikorian, “Reactions of Refractory Silicides with Carbon and Nitrogen,”J. Electrochem Soc., 103, 38 (1956).
3. 58Spe: F.H. Spedding, K.A. Gschneidner, Jr., and A.H. Daane, “The Crystal Structures of Some of the Rare-Earth Carbides,”J. Am. Chem. Soc., 80, 4499 (1958).
4. 60Pal: G.J. Palenik, “Rare-Earth Carbides—Structural and Hydrolytic Studies,” Ph.D. thesis, Univ. S. California at Los Angeles (1960); identical with J.C. Warf and G.J. Palenik, NP-8585, National Technical Information Service, Springfield, VA 22151 (1960).
5. 61Ato1: M. Atoji, “Neutron Diffraction Studies of CaC2, YC2, LaC2, CeC2, TbC2, YbC2, LuC2, and UC2,”J. Chem. Phys., 35, 1950 (1961).