K. N. Boldyrev, D. D. Gutsenko, S. A. Klimin, N. N. Novikova, B. N. Mavrin, M. N. Mayakova, V. M. Khnykov, “High-resolution IR luminescence spectra of SiC single crystals of 4H and 6H polytypes”, Optics and Spectroscopy, 128:9 (2020), 1264–1268; Optics and Spectroscopy, 128:9 (2020), 1374–1378
