Fitria, Irma, Talitha Atlanta, Nadia Azahra, Choiriyah Agustina, Subchan Subchan, and S Cahyaningtias. 2022. “OPTIMAL CONTROL ON CHOLERA DISEASE SPREADING MODEL WITH THREE VARIABLES CONTROL VARIATION”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan 16 (2), 463-70. https://doi.org/10.30598/barekengvol16iss2pp463-470.