Majid, W.H. Abd., N. Ahmad, A.K. Rosli, M.A. Mohd Sarjidan, and N.A. Halim. “Properties of Nanogenerator Materials for Energy-Harvesting Application”. Journal of Research Updates in Polymer Science 12 (October 4, 2023): 140–161. Accessed May 4, 2025. https://www.lifescienceglobalca.com/index.php/jrups/article/view/9285.