References
- V. Lantto and P. Romppainen , Electrical studies on the reactions of CO with different oxygen species on SnO2 surfaces , Surface science , 1987 192 , pp. 243 – 264
- P. Romppainen and H. Torvela and J. Vaananen and S. Leppavuori , Effect of CH4, SO2 and NO on the CO response of an SnO2–based thick film gas sensor in combustion gases, Sensor and actuators , 1985 8, pp. 271–279
- H. Torvela , Dctcction of air pollution and studies on ceramic tin dioxidc scnsors used lo scnsc gases emitted rrom combustion proccsscs. Ph.D. Thesis . Department of Electrical Engineering, University of Oulu 1987
- H. Torvela and P. Romppainen and S. Leppavuori , Experiments on the use of semiconducting thick film SnO2 sensor to detect carbon monoxide levels in combustion gases and plant environments. Proceedings of the 12th Nordic Semiconductor Meeting . Norway , Jun , 1986 , pp. 302 – 306
- H. Torvela and P. Romppainen and S. Leppävuori , Study of a resistive type thick film SnO2 sensor response to detect carbon monoxide levels in combustion gases in laboratory and plant environments Proceedings of the 2nd International Meeting on Chemical Sensors . Bordeaux , Jul 1986 , pp. 217 – 221