Zinchenko, V. et al. 2017. Spectroscopic Research of Interaction in the Systems Ge-In2O3- M xOy (M-Sn(IV), La, Sm, Eu). Physics and Chemistry of Solid State. 18, 3 (Sep. 2017), 347–353. DOI:https://doi.org/10.15330/pcss.18.3.347-353.