Spur reduction in wideband PLLs by random positioning of charge pump current pulses. - Chembiyan Thambidurai; Nagendra Krishnapura (ISCAS, 2010)

On Pulse Position Modulation and Its Application to PLLs for Spur Reduction. - Chembiyan Thambidurai; Nagendra Krishnapura (IEEE Trans. Circuits Syst. I Regul. Pap., 2011)

Reference Spur Reduction in Sampled-loop filter PLLs by Oversampling. - Chembiyan Thambidurai; Preetham N. Reddy; Raghurama Gunaje (ISCAS, 2022)