Mukhopadhyay, Kingsuk, Kanik Ram, and K.U. Bhasker Rao. “Carbon Nanotubes and Related Structures”. Defence Science Journal 58, no. 4 (July 1, 2008): 437-450. Accessed October 21, 2019. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1666.