Nuha, A., N. Achmad, G. Rahman, S. Abdullah, S. Chasanah, N. Valentika, and L. Nashar. “ANALYSIS OF OPTIMUM CONTROL ON THE IMPLEMENTATION OF VACCINATION AND QUARANTINE ON THE SPREAD OF COVID-19”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 16, no. 4, Dec. 2022, pp. 1139-46, doi:10.30598/barekengvol16iss4pp1139-1146.