Gontar, A. G.; Bykovskaja, E. G.; Knunyants, I. L. Zh. Vses. Obshchestva, 1975 , vol. 20, p. 232 - 233 C.A., 1975 , vol. 83, p. 9083 Full Text Show Details Gmelin Handbook: F: PerFHalOrg.9, 6, page 39 - 49