Ahdika, Atina. “Distribution Of The Difference Of Two Independent Poisson Random Variables And Its Application To The Literate Population Data”. EKSAKTA: Journal of Sciences and Data Analysis 15, no. 1-2 (December 17, 2015): 61–74. Accessed May 1, 2024. https://journal.uii.ac.id/Eksakta/article/view/4390.