Raha, K., and J. S. Chhabra. “Piezoelectricity in Single Crystal of Pentaerythritol Tetranitrate”. Defence Science Journal 41, no. 3 (January 1, 2013): 295–304. Accessed June 15, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4433.