Fabrication and Characterization of Tri Metal Oxides by Chemical Spray Pyrolysis Technique as a Gas Sensor. Al-Khwarizmi Engineering Journal, [S. l.], v. 12, n. 4, p. 132–140, 2017. DOI: 10.22153/kej.2016.05.007. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/328.. Acesso em: 2 may. 2024.