M. Boukhalfa, A. Benaissa, M. R. Bengourina, A. Khoudiri, and M. Boudiaf, “Performance Enhancement of the DPC Control Based on a VGPI Controller Applied to a Grid Connected PV System”, Eng. Technol. Appl. Sci. Res., vol. 12, no. 2, pp. 8253–8258, Apr. 2022.