GARG, K. . Beltrami’s Conjecture. International Journal on Recent Trends in Life Science and Mathematics, [S. l.], v. 9, n. 2, p. 33–40, 2022. DOI: 10.17762/ijlsm.v9i2.133. Disponível em: https://www.ijlsm.org/index.php/ijlsm/article/view/133. Acesso em: 15 sep. 2025.