G.A. Kaptagay, N.O. Koilyk, A.M. Tatenov, N.A. Sandibaeva, и A.A. Dutbayeva. «EVALUATION OF ENERGY EFFICIENCY OF THE NITROGEN-DOPED Co3O4 (100) SURFACE FOR WATER DISSOCIATION». Известия НАН РК. Серия физико-математическая, вып. 5, октябрь 2019 г., сс. 126-132., https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1666.