S. Smola, Y. . Fadieiev, N. . Rusakova, M. . Rusakova, and N. . Efryushina, “SOL-GEL PROCESSED SIO2-AL2O3 XEROGELS: SYNTHESIS AND LUMINESCENT PROPERTIES”, Ukr. Chem. Journ., vol. 86, no. 9, pp. 3–13, Oct. 2020.