ROY, S.; PAUL, T. K. .; MAITI, S. .; PAL, R. R. Voltage Differencing Current Conveyor Based Voltage-Mode and Current-Mode Universal Biquad Filters with Electronic Tuning Facility. International Journal of Engineering and Technology Innovation, [S. l.], v. 11, n. 2, p. 146–160, 2021. DOI: 10.46604/ijeti.2021.6821. Disponível em: https://ojs.imeti.org/index.php/IJETI/article/view/6821. Acesso em: 20 apr. 2024.