[1]
K. Nguyen-Duy, A. Knott, and M. A. E. Andersen, “Constant Switching Frequency Self-Oscillating Controlled Class-D Amplifiers”, ELEKTRON ELEKTROTECH, vol. 20, no. 6, pp. 84–88, Jun. 2014, doi: 10.5755/j01.eee.20.6.7273.