List of Articles Average Queue Length Open Access Article Abstract Page Full-Text 1 - Supply Chain Analysis via the Queuing Theory Approach Morteza Shafiee Mahsa Rafatmah 10.30495/qjopm.2019.668708 Open Access Article Abstract Page Full-Text 2 - Analysis of M/G/ 1 queueing model with state dependent arrival and vacation Charan Jeet Singh Madhu Jain Binay Kumar