Nguyen, Van Toan, Van Duy Nguyen, and Van Hieu Nguyen. “Fabrication of H2S Gas Sensor Based on SnO2 NiO Thin Film”.
Old Journal
, no. 116 (January 15, 2017): 68–71. Accessed August 2, 2025. https://jst.vn/index.php/old/article/view/442.