Soliman, Bill William M., and Aldous Cesar F. Bueno. “MODELLING THE SPREAD OF PNEUMONIA IN THE PHILIPPINES USING SUSCEPTIBLE-INFECTED-RECOVERED (SIR) MODEL WITH DEMOGRAPHIC CHANGES”. Journal of Technology Management and Business 5, no. 1 (February 12, 2018). Accessed April 29, 2024. https://penerbit.uthm.edu.my/ojs/index.php/jtmb/article/view/2242.