1. Closed loop electric fuel injection control of the I.C. Engine;Rivard;SAE Paper No. 730005, International Automotive Engineerig Congress, Detroit,1973
2. Closed loop exhaust emission control system with electronic fuel injection;Zechnall;SAE Paper No. 730566, National Automotive Engineering Meeting, Detroit,1973
3. ZrO2 oxygen sensors for automotive applications;Logothetis,1981
4. Sensor for on-vehicle detection of engine exhaust gas composition;Fleming;SAE Paper No. 730575, National Automotive Engineering Meeting, Detroit,1973
5. Device model of the zirconia oxygen sensor;Fleming;SAE Paper No. 770400, International Automotive Engineering Congress, Detroit,1977