Elbeih, Ahmed, Mahmoud Abdelhafiz, and Ahmed Hussein. “Influence of Different Polymeric Matrices on the Properties of Pentaerythritol Tetranitrate”. Defence Science Journal 71, no. 2 (March 10, 2021): 177-184. Accessed April 16, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/16132.