BULIKUNZIRA, S. Lagrange Formalism for Electromagnetic Field in Terms of Strengths E<sup> &rarr; </sup> and H<sup> &rarr; </sup>. Asian Journal of Fuzzy and Applied Mathematics, [S. l.], v. 3, n. 5, 2015. Disponível em: https://ajouronline.com/index.php/AJFAM/article/view/3111. Acesso em: 29 mar. 2024.