Garahun, T., Pukkalanun, T., & Tangsrirat, W. (2013). Electronically Tunable Current-Mode Multifunctional Biquadratic Filter Using FTFNs and Dual-Output OTAs. Engineering and Applied Science Research, 32(4), 467–478. retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/6197