Lefevre, C. “Endemicite Dans Le Modele d’épidemie Logistique à Temps Discret”. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science 25, no. 2-3 (September 1, 1985): 29–38. Accessed May 9, 2024. https://www.orbel.be/jorbel/index.php/jorbel/article/view/472.