1. T. Bell, S. P. Evans, B. Birch, and V. Korotchenko:Heat Treatment, The Metals Society, 1973, pp. 51–58.
2. B. Edenhofer:Heat Treatment of Metals, 1974, vol. 1, pp. 23–28.
3. T. Bell and V. Korotchenko:Heat Treatment of Metals, 1978, vol. 4, pp. 88–94.
4. A. M. Staines and T. Bell:Heat Treatment—Methods and Media, Institution of Metallurgists, 1979.
5. O. I. Butenko, V. B. Dalisov, Yu. M. Lakhtin, V. I. Polhmurskii, and A. M. Shlyafirner: “The Effect of Ionic Nitriding on the Fatigue Limit of Steel 38KhMY uA,”Fiz. Khim. Mek. Mater., vol. 6, no. 8, pp. 88-89.