1. Porai-Koshits, M.A. and Gilinskaya, E.A. Kristallokhimiya, Moscow, VINITI, 1966, p. 126.
2. Porai-Koshits, M.A. and Atovmyan, L.O., Koord. Khim., 1975, vol. 1, p. 1271.
3. Griffith, F. and Wicing, C., J. Chem. Soc. A, 1968, no. 2, p. 379.
4. Porai-Koshits, M.A., Izv. Yugosl. Kristallogr. Tsentra, 1974, vol. 9, p. 19.
5. Porai-Koshits, M.A. and Atovmyan, L.O., Kristallokhimiya koordinatsionnykh soedinenii molibdena (Crystal Chemistry of Coordination Compounds of Molybdenum), Moscow: Nauka, 1974.