Yngvar Berg Snorre Aunet Øivind Næss Henning Gundersen Mats Høvin Extreme low-voltage floating-gate CMOS transconductance amplifier. 37-40 2001 conf/iscas/2001 ISCAS (1) http://doi.ieeecomputersociety.org/10.1109/ISCAS.2001.921782 db/conf/iscas/iscas2001-1.html#BergANGH01