Noeth,H.; Beyer,H. Chemische Berichte, 1960 , vol. 93, p. 928 - 938 Full Text Show Details Kovar, R. A.; Culbertson, R.; Ashby, E. C. Inorganic Chemistry, 1971 , vol. 10, p. 900 - 905 Full Text View citing articles Show Details Gmelin Handbook: B: B-Verb.14, 3.7.1.3, page 69 - 72