Danupat Duangmalai, Thosapol Manasri, Adisorn Kwawsibsam, and Winai Jaikla. “Electronically Tunable Voltage-Mode Multiphase Sinusoidal Oscillator With Low Output Impedance Nodes Employing VD-DIBAs”. International Journal of Engineering and Technology Innovation, vol. 13, no. 2, Apr. 2023, pp. 137-49, doi:10.46604/ijeti.2023.10461.