1973
4. V. S. Kozhukharov
Phase equilibrium, glass formation and glass properties in
TeO2 - V2O5 - ZnO and TeO2 - V2O5 - Fe2O3 system.
Ph. D. Thesis , Sofia (1973) (in Bulgarian)
5. M. R. Marinov. V. S. Kozhukharov, Y. N. Pavlova
Phase equilibrium and electric conductivity in the system TeO2 - Fe2O3.
Compt. rend. Acad. Bulg. Sci. 26 (1973) 343.