ŞTEFAN, Maria, et al. “MORPHO-STRUCTURAL AND PHOTOCATALYTIC PROPERTIES OF SnO₂ NANOPARTICLES”. Studia Universitatis Babeș-Bolyai Chemia, vol. 64, no. 3, Sept. 2019, pp. 99-109, doi:10.24193/subbchem.2019.3.08.