Yabagi, Jibrin Alhaji, Mohammed Isah Kimpa, Muhammad Nmaya Muhammad, Nafarizal Nayan, Zaidi Embong, and Mohd Arif Agam. “Nanofabrication Process by Reactive Ion Etching of Polystyrene Nanosphere on Silicon Surface”. Journal of Science and Technology 9, no. 3 (December 28, 2017). Accessed July 8, 2020. https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/2197.