Herdicho, F. F. ., Fatmawati, Alfiniyah, C., & Chukwu, C. W. . (2025). Hybrid Euler method and Pontryagin Principle in fractional dengue model with sex classification and optimal controls. Statistics, Optimization & Information Computing, 14(1), 130–143. https://doi.org/10.19139/soic-2310-5070-2393