“Polyvinylpyrrolidone/Multi-Walled/Carbon/Nanotubes/Graphene/Nanocomposite/As/Gas/Sensor/”. Iraqi Journal of Science 63, no. 9 (September 30, 2022): 3719–3726. Accessed April 7, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5171.