SUMMART, S. .; SIRITHAI, S.; VAISOPHA, B. .; JANTAKUN, A. . Electronically Controlled Biquadratic Filter and Quadrature Oscillator Using CDTAs. International Journal of Engineering and Technology Innovation, [S. l.], v. 12, n. 4, p. 322–335, 2022. DOI: 10.46604/ijeti.2022.8230. Disponível em: https://ojs.imeti.org/index.php/IJETI/article/view/8230. Acesso em: 17 apr. 2024.