1. Best, R.E.: Phase-Locked Loops: Design, Simulation and Applications, 6th edn. McGraw-Hill, New York (2005)
2. Egan, W.F.: Frequency Synthesis by Phase Lock, 2nd edn. Wiley, New York (2000)
3. Yen, J., Langari, R.: Fuzzy Logic: Intelligence, Control, and Information. Prentice Hall, India (1990)
4. Chatterjee, B., Biswas, B.N., Ray, S.: A novel DSP-based PFC-DPLL with fuzzy controlled acquisition aid to improve acquisition performance and noise immunity. Int. J. Comm. Syst. 28(15), 2051–2066 (2015)
5. Simon, D., El-Sherief, H.: Fuzzy logic for digital phase-locked loop filter design. IEEE Trans. Fuzzy Syst. 3(2), 211–218 (1995)