1. R. Chatterjee-Fischer, O. Schaaber, Proceedings of the Sixteenth Heat Treat. Conference. Stratford-upon-Avon, Met. Soc., London, England, 1976, 27–30.
2. L.P. Skugorova, V.I. Shlykov, A.I. Nechaev, Consultants Bureau, New York, 1972, translated from Metallovedenie i Termicheskaya Obrabotka Metallov 5 (1972) 61–62.
3. Boriding with a thermally unstable gas (diborane)