TANDON, S.; SHARMA, Y.; BISHNOI, N.; TANDON, K. Optical Studies on Rare Earth Lasting Materials. Defence Science Journal, [S. l.], v. 47, n. 2, p. 225–238, 2013. DOI: 10.14429/dsj.47.4004. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4004. Acesso em: 16 jun. 2025.