J. Sirirat, W. Tangsrirat and W. Surakampontorn, “Voltage-Mode Electronically Tunable Universal Filter Employing Single CFTA,” International Conference on Electrical Engineering/Electronics Computer Telecommunications and Information Technology, Chaing Mai, 19-21 May 2010, pp. 759-763.
 D. Prasad, D. R. Bhaskar and A. K. Singh, “Multi-Function Biquad Using Current Differencing Transconductance Amplifier,” Analog Integrated Circuits and Signal Processing, Vol. 61, No. 3, 2009, pp. 309-313. doi:10.1007/s10470-009-9310-1
 N. Herencsar, J. Koton, K. Vrba and O. Cicekoglu, “Single UCC-N1B 0520 Device as a Modified CFOA and Its Application to Voltage and Current-Mode Universal Filters,” Applied Electronics, Pilsen, 9-10 September 2009, pp. 127-130.
 J. W. Horng, C. K. Chang and J. M. Chu, “Voltage-Mode Universal Biquadratic Filter Using Single Current-Feedback Amplifier,” IEICE Transactions on Fundamentals, Vol. 85, No. 8, 2002, pp. 1970-1973.
 D. Biolek and V. Biolkova, “First-Order Voltage-Mode All-Pass Filter Employing One Active Element and One Grounded Capacitor,” Analog Integrated Circuits and Signal Processing, Vol. 65, No. 1, 2009, pp. 123-129.
 D. Prasad, D. R. Bhaskar and K. L. Pushkar, “Realization of New Electronically Controllable Grounded and Floating Simulated Inductance Circuits Using Voltage Differencing Differential Input Buffered Amplifiers,” Active and Passive Electronic Components, Vol. 2011, 2011, Article ID: 101432. doi:10.1155/2011/101432