HARDNESS AND MICROSTRUCTURE OF 0.60%C STEEL HARDENED IN TRANSESTRIFIED NEEM OIL. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 4, n. 3, p. 679–684, 2020. DOI: 10.33003/fjs-2020-0403-431. Disponível em: http://162.254.38.185/index.php/fjs/article/view/431. Acesso em: 17 sep. 2025.