Mrs. Sudha .M, Priyanga.S, Pavithraa .S, and Priyadharshini .S. “Grid Frequency Based Load Control Using Pic Microcontroller”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 6, no. 1, Mar. 2018, pp. 383-6, https://ijiarec.com/ijiarec/article/view/470.