Chen, Yilong, and Mauricio C. de Oliveira. “Revisiting Stability Analysis of Phase-Locked Loops With the Popov Stability Criterion”. IFAC Journal of Systems and Control, vol. 18, 2021, p. 100177, https://doi.org/10.1016/j.ifacsc.2021.100177.
Chen, Y., & de Oliveira, M. C. (2021). Revisiting stability analysis of Phase-Locked Loops with the Popov Stability Criterion. IFAC Journal of Systems and Control, 18, 100177. https://doi.org/10.1016/j.ifacsc.2021.100177
Chen Y, de Oliveira MC. Revisiting stability analysis of Phase-Locked Loops with the Popov Stability Criterion. IFAC Journal of Systems and Control. 2021;18:100177.