Kumar, Rajesh, O. Al-Dossary, Girish Kumar, and Ahmad Umar. “Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications: A Review”. Nano-Micro Letters 7, no. 2 (December 16, 2014): 97-120. Accessed November 24, 2024. https://nmlett.org/index.php/nml/article/view/572.