1. Andrianov, V.A., Kozin, M.G., Nefedov, L.V., Romashkina, I.L., Sergeev, S.A., and Shpinel, V.S., Izv. Ross. Akad. Nauk, Ser. Fiz., 1996, vol. 60, no. 11, p. 184.
2. Kozin, M.G., Romashkina, I.L., Sergeev, S.A., Nefedov, L.V., Koshelets, V.P., and Filippenko, L.V., Bull. Russ. Acad. Sci.: Phys., 2007, vol. 71, no. 9, p. 1302.
3. Kozin, M.G., Romashkina, I.L., Smirnova-Pinchukova, I.O., Koshelets, V.P., and Filippenko, L.V., Bull. Russ. Acad. Sci.: Phys., 2015, vol. 79, no. 8, p. 1062.
4. Kozin, M.G., Romashkina, I.L., Filippenko, L.V., and Koshelets, V.P., AIP Adv., 2016, vol. 6, p. 025315.
5. Belozerskii, G.N., Messbauerovskaya spektroskopiya kak metod issledovaniya poverkhnosti (Mössbauer Spectroscopy as a Surface Analysis Technique), Moscow: Energoatomizdat, 1990.