1. H. Ihokura, DENKIKAGAKU 50 (1982) 99.
2. T. Takeuchi, K. Saji, H. Kondo, I. Igarashi, The Electrochemical Society Extended Abstracts, 78-1, Pittsburgh, PA, October 15–20, 1978, 196 pp.
3. Humidity-sensitive electrical conduction of MgCr2O4–TiO2 porous ceramics;Nitta;J. Am. Cer. Soc.,1980
4. Proceedings of International Meeting on Chemical Sensors, Fukuoka, Japan, September 19–22,1983
5. Theory of power laws for semiconductor gas sensors;Yamazoe;Sens. Actuators B: Chem.,2008