Puspita, J. W., M. Fakhruddin, H. Fahlena, F. Rohim, and S. Sutimin. “On the Reproduction Ratio of Dengue Incidence in Semarang, Indonesia 2015-2018”. Communication in Biomathematical Sciences, vol. 2, no. 2, Dec. 2019, pp. 118-26, doi:10.5614/cbms.2019.2.2.5.