LOBO, J. Z.; VALAULIKAR, Y. S. Group Classification of Second-Order Linear Neutral Differential Equations. Contemporary Mathematics, [S. l.], v. 5, n. 2, p. 1447–1467, 2024. DOI: 10.37256/cm.5220243221. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/3221. Acesso em: 3 jul. 2024.