Bondariev, A., S. Altunin, I. Horbatyi, and I. Maksymiv. “Firmware Implementation and Experimental Research of the Phase-Locked Loop With Improved Noise Immunity”. Eastern-European Journal of Enterprise Technologies, vol. 5, no. 9 (95), Sept. 2018, pp. 17-25, doi:10.15587/1729-4061.2018.143178.