Fischer, O. E.; Hafner, W. Zeitschrift fuer Anorganische und Allgemeine Chemie, 1956 , vol. 286, p. 146 - 148 Full Text Show Details Tsutsui, M.; Chang, G. Canadian Journal of Chemistry, 1963 , vol. 41, p. 1255 - 1259 Full Text Show Details Hafner, W.; Fischer, E. O. Patent: US2953586 , 1960 ; Full Text Show Details Bolotnikova, T. N. Ziz. Probl. Spektrosk. Mater. 13-go Soveshch., Leningrad 1960 <1962>, Bd. 1,S. 254/8 Full Text Show Details Bush, R. W. Diss. Univ. of Illinois 1960,S. 1/87