1. S. I. Filippov, Theory of Metallurgical Processes (Metallurgiya, Moscow, 1967) [in Russian].
2. E. Houdremon, Handbuch der Sonderstahlkunde, Bands 1, 2 (Springer, Berlin, 1956; Metallurgiya, Moscow, 1966).
3. A. P. Bashchenko, V. I. Izotov, A. V. Omel’chenko, et al., “Doping Iron and Its Alloys by Nitrogen under Pressure,” Izv. Akad. Nauk SSSR, Met., No. 4, 173–178 (1985).
4. A. P. Bashchenko, A. V. Omel’chenko, and V. I. Soshnikov, “Gas-Thermobaric Methods of Producing Nitrogen Alloys,” Izv. Akad. Nauk SSSR, Met., No. 4, 143–145 (1988).
5. T. Masumoto, M. Naka, and Y. Imai, “Solubility of N in Austenitic Fe under High Pressure of Nitrogen Gas and Thermodynamical Properties of Austenitic Interstitial Solid Solution of the Fe-N System,” Nippon Kindzoku Gakkaishi 34(2), 195–201 (1970).