GUPTA, G. S. Estimation of vertex from the total time of plight to graze and modification of Sladen’s formula. Defence Science Journal, [S. l.], v. 16, n. 1, p. 31–38, 2014. DOI: 10.14429/dsj.16.7316. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7316. Acesso em: 16 jun. 2025.