N. Uday Kumar, et al. “Implementation of Passivity-Based Control of Four-Leg Inverter for Transformerless Three-Phase Solar Photovoltaic Systems”. International Journal on Recent and Innovation Trends in Computing and Communication, vol. 11, no. 9, Nov. 2023, pp. 3890-0, doi:10.17762/ijritcc.v11i9.9669.