S. Cahyaningtias and R. Putri, “Analisis Keterkontrolan Model Penyebaran Virus Polio Tipe Vaccine-Derived Polio Virus (VDPV) dan Wild Polio Virus (WPV)”, UJMC (Unisda Journal of Mathematics and Computer Science), vol. 5, no. 01, pp. 35 - 40, Jun. 2019.