Khoi , T. D., and L. V. Dai. “Development of the Hybrid MPPT Control Algorithm for Grid-Connected PV Systems Using Runge-Kutta Optimized Fractional-Order Synergetic Control”. Journal of Renewable Energy and Smart Grid Technology, vol. 21, no. 1, Apr. 2026, pp. 81-93, doi:10.69650/rast.2026.264069.