El Madani, Z., A. Yahya, and Z. El Malki. “Nonlinear Backstepping Control for Three-Phase Single-Stage Grid-Tied Photovoltaic Systems via an LCL-Filter”. Engineering, Technology & Applied Science Research, vol. 14, no. 6, Dec. 2024, pp. 17950-7, doi:10.48084/etasr.8722.