Design of a Low-voltage Instrumentation Amplifier for Enzyme-Extended-Gate Field Effect Transistor Based Urea Sensor Application. - Wen-Yaw Chung; Mao-Hsiang Yeh; Jia-Chyi Chen; Shen-Kan Hsiung; Dorota G. Pijanowska; Wladyslaw Torbicz; Jung-Chuan Chou; Tai-Ping Sun (DELTA, 2002)