List of Articles Open Access Article Abstract Page Full-Text 1 - Multi-choice stochastic bi-level programming problem in cooperative nature via fuzzy programming approach Sumit Kumar Maiti Sankar Kumar Roy Open Access Article Abstract Page Full-Text 2 - Closed loop supply chain network design with fuzzy tactical decisions Mahtab Sherafati Mahdi Bashiri Open Access Article Abstract Page Full-Text 3 - Combination of real options and game-theoretic approach in investment analysis Abdollah Arasteh Open Access Article Abstract Page Full-Text 4 - On the use of back propagation and radial basis function neural networks in surface roughness prediction Angelos P. Markopoulos Sotirios Georgiopoulos Dimitrios E. Manolakos Open Access Article Abstract Page Full-Text 5 - JIT single machine scheduling problem with periodic preventive maintenance Mohammadreza Shahriari Naghi Shoja Amir Ebrahimi Zade Sasan Barak Mani Sharifi Open Access Article Abstract Page Full-Text 6 - Cooperative vehicle routing problem: an opportunity for cost saving Sedighe Zibaei Ashkan Hafezalkotob Seyed Sajad Ghashami Open Access Article Abstract Page Full-Text 7 - A genetic algorithm for a bi-objective mathematical model for dynamic virtual cell formation problem Mostafa Moradgholi Mohammad Mahdi Paydar Iraj Mahdavi Javid Jouzdani Open Access Article Abstract Page Full-Text 8 - Models, solution, methods and their applicability of dynamic location problems (DLPs) (a gap analysis for further research) Seyed Mohammad Seyedhosseini Ahmad Makui Kamran Shahanaghi Sara Sadat Torkestani Open Access Article Abstract Page Full-Text 9 - Efficacy of fuzzy MADM approach in Six Sigma analysis phase in automotive sector Rajeev Rathi Dinesh Khanduja S. K. Sharma Open Access Article Abstract Page Full-Text 10 - An alternative transformation in ranking using l1-norm in data envelopment analysis S. Ziari