V. N. Abramov, A. N. Ermoshkin, A. I. Kuznetsov, “Optical properties and electron band structure of $\mathrm{Y}_{2}\mathrm{O}_{3}$ and $\mathrm{Se}_{2}\mathrm{O}_{3}$”, Fizika Tverdogo Tela, 25:6 (1983), 1703–1711
Organisations
Institute of Physics of the Academy of Sciences of the Èstonian SSR