Ahmad Syarnubi, Saefullah, Karyawan Setiadi, Purnama Wijaya L. Wahyudi, Fergyanto E. Gunawan, Muhammad Asrol 2021. Identifying the Sources of Work-Order Back-logs in a Petrochemical Production Process. Turkish Journal of Computer and Mathematics Education (TURCOMAT). 12, 14 (Aug. 2021), 1649–1656. DOI:https://doi.org/10.17762/turcomat.v12i14.10501.