Yngvar Berg Tor Sverre Lande Area efficient circuit tuning with floating-gate techniques. 396-399 1999 conf/iscas/1999 ISCAS (2) http://doi.ieeecomputersociety.org/10.1109/ISCAS.1999.780743 db/conf/iscas/iscas1999-2.html#BergL99a