PRASAD, R. Requirements Analysis Spiral. Defence Science Journal, [S. l.], v. 56, n. 1, p. 5–12, 2006. DOI: 10.14429/dsj.56.1866. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1866. Acesso em: 29 jun. 2025.