Joossens, J. “Het Verwerken Van Kankersterftestatistieken”. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science 7, no. 3-4 (May 1, 1967): 65–73. Accessed May 5, 2024. https://www.orbel.be/jorbel/index.php/jorbel/article/view/192.