Saurabh.B.Patel, and Prof. Vikash Verma. “Push-Pull Front End Converter Based Bi-Directional Inverter For Photovoltaic Rooftop System”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 3, no. 5, May 2016, pp. 668-73, https://ijaerd.org/index.php/IJAERD/article/view/1605.