RAO, K. J. Sandwich Structure. Defence Science Journal, [S. l.], v. 18, n. 3, p. 179–184, 2014. DOI: 10.14429/dsj.18.7449. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7449. Acesso em: 16 jun. 2025.