BAJAJ, I.; KAPOOR, S. K.; CHATTERJEE, S. R. Nitration of Polystyrene-Part II Effect of Nitrating Medium on Nitration. Defence Science Journal, [S. l.], v. 18, n. 2, p. 89–94, 2014. DOI: 10.14429/dsj.18.7438. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7438. Acesso em: 7 jul. 2025.