TOMA, Maria-Iuliana, et al. “STRUCTURE AND MORPHOLOGY OF ZnO FILMS CO-DOPED WITH AL AND RARE EARTH DEPOSITED BY SPRAY COATING TECHNIQUE”. Studia Universitatis Babeș-Bolyai Physica, vol. 67, no. 1-2, Dec. 2022, pp. 43-53, doi:10.24193/subbphys.2022.05.