T.Naga Durga, K.S.Lakshmi Lavanya, G.Tabita. 2021. “Maximum Power Extraction from Solar Photovoltaic Strings Using Grey Wolf Optimization Technique Under Partial Shading Condition”. Design Engineering 2021 (04), 1276 -85. http://thedesignengineering.com/index.php/DE/article/view/1663.