The influence of the chemical composition, including harmful and undesirable impurities, on the properties of spring steels. Международный научный журнал «Инженер», [S. l.], v. 2, n. 4, p. 21–23, 2025. DOI: 10.56143/3030-3893/2024-4-21-23. Disponível em: https://engineer.tstu.uz/index.php/engineer-tstu/article/view/35. Acesso em: 26 jul. 2026.