Muhammad Sarwar Ehsan, Musharraf Ahmad Hanif, and Maryam Javed. “Comparison of Least Mean Square Based Techniques for Spur Cancellation in Fractional N-Frequency Synthesizer”. IEEEP New Horizons Journal, vol. 101, no. 1, Dec. 2019, pp. 29-38, https://www.ieeepnhrj.org/index.php/ieeep/article/view/17.