Classes of Ordinary Differential Equations of Length Biased Exponential Distribution and their Solutions. Punjab University Journal of Mathematics, [S. l.], v. 54, n. 12, p. 713–721, 2025. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/247. Acesso em: 29 jun. 2025.