1. Taguchi, M., Application of high-technology ceramics in Japanese automobiles. Adv. Ceram. Mater., 1987, 2, 754–62.
2. Owens, J. S., Hinton, J. W., Insley, R. H. and Poland, M. E., Development of ceramic insulators for spark plugs. Amer. Ceram. Soc. Bull., 1977, 56, 437–9, 443.
3. Nishio, K., Spark plugs. Serammikusu (in Japanese), 1982, 17, 15–19.
4. Nishio, K., Effect of resistor spark plug on noise suppression. Nainen-Kikan (in Japanese), 1973, 12, [10] 31–40.
5. Nishio, K., Trend in resistor spark plugs. J. Soc. Automotive Engineers Jpn. (in Japanese), 1982, 36, 1082–87.