G. Neira, S.J., “In Memoriam: P. Neftalí Vélez Ch., S.J. (1948 - 1994)”, Theol. Xave, no. 111, Aug. 1994, Accessed: Jul. 12, 2025. [Online]. Available: https://revistas.javeriana.edu.co/index.php/teoxaveriana/article/view/21435