E. Barannik, S. Kononenko, V. Zhurenko, O. Kalantaryan, and P. Kuznietsov, “Exciton X-Ray Induced Luminescence of Y2O3 Polycrystals Sintered from the Nanopowder”, East Eur. J. Phys., no. 2, pp. 378-383, Jun. 2023.