Dao , T.-D., Kieu , V.-H., Kieu Thi , H.-N., Nguyen , C.-N., & Dinh Thi, T.-H. (2022). Some notes on the dynamic behavior of COVID-19 epidemic disease governed by modified SEIR epidemic model with saturated treatment function. HPU2 Journal of Science: Natural Sciences and Technology, 1(2), 3–23. https://doi.org/10.56764/hpu2.jos.2022.2.1.3-23