IMPROVING THE TECHNOLOGY OF OBTAINING GRAY SINK ALLOY BRANDED CЧ – 32-52, CЧ – 28-48 USING SECONDARY BLACK METAL FRAGMENTS. European Journal of Emerging Technology and Discoveries, [S. l.], v. 2, n. 2, p. 1–4, 2024. Disponível em: https://europeanscience.org/index.php/1/article/view/413. Acesso em: 12 sep. 2025.