Abu Bakar, S.J., N.S. Ahmad, and P. Goh. “FIXED-POLE ACTIVE PI FILTER DESIGN FOR HIGH FREQUENCY NONLINEAR PLL MODELS”. Journal of Advanced Manufacturing Technology (JAMT) 13, no. 2 (1). Accessed June 28, 2022. https://jamt.utem.edu.my/jamt/article/view/5515.