RAMAKRISHNA, V. Manufacture of Semi-Conductor Grade Silicon. Defence Science Journal, [S. l.], v. 18, n. 2A, p. 13–20, 2014. DOI: 10.14429/dsj.18.7431. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7431. Acesso em: 1 jul. 2025.