Mahmoud, Zaid Hameed, Omar Dhaa Abdalstar, and Noor Sabah. “Semiconductor Metal Oxide Nanoparticles: A Review for the Potential of H2S Gas Sensor Application”. Earthline Journal of Chemical Sciences 4, no. 2 (August 15, 2020): 199-208. Accessed March 28, 2024. https://earthlinepublishers.com/index.php/ejcs/article/view/222.