M. Irfan Fahmi, M. Zarlisb, Tulus, Syahril Efendi. “An Optimization Model for Solving Integrated Hospital Capacity Planning Problem”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 6, June 2021, pp. 4816-24, doi:10.17762/turcomat.v12i6.8660.