References |
Komkov, A.I., (1959) Dokl. Akad. Nauk SSSR, 126, p. 641; Aleksandrov, V.B., (1962) Dokl. Akad. Nauk SSSR, 142, p. 181; Aleksandrov, V.B., (1963) Dokl. Akad. Nauk SSSR, 153, p. 672; Komkov, A.I., (1963) Dokl. Akad. Nauk SSSR, 153, p. 672; Blasse, G., (1966) J. Inorg. Nucl. Chem., 28, p. 1122; Blasse, G., Bril, A., (1967) Philips Res. Repts., 22, p. 46; Blasse, G., Bril, A., The Influence of Crystal Structure on the Fluorescence of Oxidic Niobates and Related Compounds (1968) Zeitschrift für Physikalische Chemie, 57, p. 187; McClure, D.S., (1959) Solid State Phys., 9, p. 476; Bethe, U., (1929) Ann. d. Phys., 3, p. 133; Blasse, G., (1969) Philips Res. Repts., 24, p. 131 |