1. An integrated NMOS operational amplifier with internal compensation;Tsividis;IEEE JSSC,1976
2. MOS switched capacitor filters;Allstot;IEEE JSSC,1978
3. High-performance NMOS operational amplifier;Senderowicz;IEEE JSSC,1978
4. CMOS switched-capacitor filters for a PCM Voice CODEC;Gregorian;IEEE JSSC,1979
5. A high speed NMOS operational amplifier fabricated using VLSI technology;Ishihara;Electronics Letters,1982