HAIRUL UMAM; ENDY MUHARDIN. QUEUE PROBLEMS WITH HETEROGENEOUS ARRIVAL AND SERVICE PROCESSES. JURNAL ILMIAH EDUNOMIKA, [S. l.], v. 10, n. 1, 2026. DOI: 10.29040/jie.v10i1.19260. Disponível em: https://www.jurnal.stie-aas.ac.id/index.php/jie/article/view/19260. Acesso em: 21 feb. 2026.