List of Articles Perfect Open Access Article Abstract Page Full-Text 1 - EPQ model with inspection of batches and disposal of defective items Eveline Zidan Ludmylla Moreira Fabíola Oliveira Adriana Leiras 10.30495/jiei.2021.1920493.1083 20.1001.1.17355702.2021.17.2.1.3 Open Access Article Abstract Page Full-Text 2 - A cloudy fuzzy economic order quantity model for imperfect-quality items with allowable proportionate discounts Sujit Kumar De Gour Chandra Mahata Open Access Article Abstract Page Full-Text 3 - Fault tolerant system with imperfect coverage, reboot and server vacation Madhu Jain Rakesh Kumar Meena Open Access Article Abstract Page Full-Text 4 - Retracted: Using genetic algorithm approach to solve a multi-product EPQ model with defective items, rework, and constrained space Kiamars Fathi Hafshejani Changiz Valmohammadi Alireza Khakpoor Open Access Article Abstract Page Full-Text 5 - Economic order quantity with partial backordering and sampling inspection Ata Allah Taleizadeh Negin Zamani Dehkordi Open Access Article Abstract Page Full-Text 6 - Optimal lot sizing in screening processes with returnable defective items Behzad Maleki Vishkaei S. T. A. Niaki Milad Farhangi Mehdi Ebrahimnezhad Moghadam Rashti