Open Science Research Excellence
Jie Jin ,  Current-Mode Resistorless SIMO Universal Filter and Four-Phase Quadrature Oscillator.   journal   = {International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2013, vol. 74(2). 216 - 221[viewed 22 May 2019]. Available from: http://waset.org/publications/9996922.