BLACKETT, P. Operational Research. Defence Science Journal, [S. l.], v. 5, n. 3, p. 275–282, 2014. DOI: 10.14429/dsj.5.7519. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7519. Acesso em: 4 aug. 2025.