N.V. Dalakova, E.Yu. Beliayev, A.N. Bludov, V.A. Horielyi, O.M. Osmolowskaya, and M.G. Osmolowsky, Conductivity of pressed powders of chromium dioxide with spin-dependent electron tunneling: the effect of thickness and composition of dielectric layers, Low Temp. Phys. 45, (2019) [Fiz. Nizk. Temp. 45, 1514-1523, (2019)] DOI: https://doi.org/10.1063/10.0000210.