1. 60Bri: L.H. Brixner, “Structure and Electrical Properties of Some New Rare Earth Asenides, Antimonides and Tellurides,”J. Inorg. Nucl. Chem., 15, 199 (1960).
2. 60Ian: A. Iandelli, “Intermetallic and Metalloid Gadolinium Compounds,”Atti Accad. Naz Lincei, Rend., Cl. Sci. Fis. Mat. Nat., Ser. 8,29, 62 (1960) in Italian.
3. 61Ian: A. Iandelli, “Cell Dimensions and Magnetic Susceptibilities of the MX Compounds of Rare Earths with P, As, Sb, Bi, S, Se, Te,”Rare Earth Research, E.V. Kleber, Ed., Macmillan, New York, 135 (1961).
4. 67Han: R. Hanks and M.M. Faktor, “Quantitative Application of Dynamic Differential Calorimetry.—2. Heats of Formation of the Group 3A Arsenides,”Trans. Faraday Soc., 63, 1130 (1967).
5. 67Jon: E.D. Jones and B. Morosin, “Sign of the Nearest-Neighbor Exchange Interaction and Its Derivative in GdAs,”Phys. Rev., 160, 451 (1967).