Suhud Wahyudi, Nurani Dwi Pangestu, and Kamiran. “nalisis an ontrol ptimal ada odel inamik enyebaran irus ika”. imits: ournal of athematics and ts pplications, vol. 20, no. 1, Mar. 2023, pp. 113-29, https://journal.its.ac.id/index.php/limits/article/view/5497.