HALDAR, P. K.; MITRA, A. C. A device for making out arcs of long radius. Defence Science Journal, [S. l.], v. 12, n. 1, p. 29–30, 2014. DOI: 10.14429/dsj.12.6830. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6830. Acesso em: 15 jun. 2025.