Srimoyee Sen Urmimala Roy Chaitanya Kshirsagar Navakanta Bhat Chandan Kumar Sarkar Circuit prospects of DGFET: Variable gain differential amplifier an a schmitt trigger with adjustable hysteresis. 280-283 2007 VLSI-SoC http://dx.doi.org/10.1109/VLSISOC.2007.4402512 conf/vlsi/2007soc db/conf/vlsi/vlsisoc2007.html#SenRKBS07