Oktavia Arnelliza Ayu et al. 2026. Optimal Control of Dengue Fever Disease Spread Model Using Pontryagin Minimum Principle. KUBIK: Jurnal Publikasi Ilmiah Matematika. 11, 1 (May 2026), 39–52. DOI:https://doi.org/10.15575/kubik.v11i1.44998.