GAO, Xinyang. Research Progress on Preparation of SnO2 Gas-Sensing Materials and Modification by Metal Ions Doping. Academic Journal of Science and Technology, [S. l.], v. 10, n. 1, p. 350–353, 2024. DOI: 10.54097/je31me29. Disponível em: https://drpress.org/ojs/index.php/ajst/article/view/19319. Acesso em: 4 sep. 2026.