A. A. Lyapin, P. A. Ryabochkina, S. V. Gushchin, M. N. Zharkov, A. S. Ermakov, V. M. Kyashkin, S. V. Ashryatov, A. V. Atanova, “Characteristics of upconversion luminescence of CaF$_{2}$ : Er powders upon laser excitation at 1.5 $\mu$m”, Optics and Spectroscopy, 128:2 (2020), 204–210; Optics and Spectroscopy, 128:2 (2020), 200–206
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