List of Articles Renewable Open Access Article Abstract Page Full-Text 1 - Analysis of implementation of Tradable Green Certificates system in a competitive electricity market: a game theory approach Meysam Ghaffari Ashkan Hafezalkotob Ahmad Makui Open Access Article Abstract Page Full-Text 2 - Modeling and sizing optimization of hybrid photovoltaic/wind power generation system Mohammad-Ali Yazdanpanah Open Access Article Abstract Page Full-Text 3 - Money-back guarantee warranty policy with preventive maintenance strategy for sensor-embedded remanufactured products Ammar Y. Alqahtani Surendra M. Gupta Open Access Article Abstract Page Full-Text 4 - Splittable stochastic project scheduling with constrained renewable resource S.S Hashemin S.M.T Fatemi Ghomi