RANGARAJAN, S. K. On the particular solution of Delta/Sup/4Fi=0 and E/Sup/4Fi=0. Defence Science Journal, [S. l.], v. 13, n. 2, p. 199–208, 2014. DOI: 10.14429/dsj.13.7092. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7092. Acesso em: 4 jul. 2025.