D. I. Vainshtein, V. D. Shchepkin, V. A. Safin, N. M. Nizamutdinov, V. M. Vinokurov, P. A. Tsirul'nik, “Point defects and $^{23}\mathrm{Na}$ ENDOR in impurity $\mathrm{NaF}$ crystals”, Fizika Tverdogo Tela, 25:4 (1983), 1046–1053
Organisations
Kazan State University named after V. I. Ul'yanova-Lenina