NARVILKAR, D. K. Solution of Equations of Internal Ballistics for the Composite Charge Using Lagrange Density Approximation. Defence Science Journal, [S. l.], v. 29, n. 3, p. 123–130, 2014. DOI: 10.14429/dsj.29.6495. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6495. Acesso em: 16 jun. 2025.