Summart, Saksit, Supawadee Sirithai, Bongkan Vaisopha, and Adirek Jantakun. 2022. “Electronically Controlled Biquadratic Filter and Quadrature Oscillator Using CDTAs”. International Journal of Engineering and Technology Innovation 12 (4):322-35. https://doi.org/10.46604/ijeti.2022.8230.