List of Articles Hybrid systems Open Access Article Abstract Page Full-Text 1 - Novel Approach for Optimal Sizing of Stand-alone Hybrid Photovoltaic/Wind Systems Zakieh Tolooi Hadi Zayandehroodi Alimorad Khajehzadeh Open Access Article Abstract Page Full-Text 2 - APPLICATION OF DIFFERENTIAL TRANSFORM METHOD TO SOLVE HYBRID FUZZY DIFFERENTIAL EQUATIONS Mahmoud Paripour Homa Heidari Elahe Hajilou