1. smith. Microelectronic circuits;Sedra,2004
2. Sinusoidal oscillators and waveform generators using modern electronic circuit building blocks;Senani,2015
3. Higher order loops improve phase noise of feedback oscillators;Hajder;Appl Microwave Wirel,2002
4. Approach for third order quadrature oscillator realisation;Pandey;IET Circuits, Devices Syst,2015
5. Current/voltage-mode third order quadrature oscillator employing two multiple outputs CCIIs and grounded capacitors;Horng;Indian J Pure Appl Phys,2011