1. Yu. M. Lakhtin and Ya. D. Kogan,Structure and Strength of Nitrided Alloys [in Russian], Metallurgiya, Moscow (1982).
2. S. S. Kiparisov and Yu. V. Levinskii,Internal Oxidation and Nitriding of Alloys [in Russian], Metallurgiya, Moscow (1979).
3. L. G. Petrova, ?Principles of alloying nickel alloys strengthened by internal nitriding,?Metalloved Term. Obrab. Met., No. 3, 5 ? 8 (1994).
4. Powder Diffraction File: Search Manual, Inorganic Compounds, Joint Committee of Powder Diffraction Standards, Swarthmore (1976).
5. J. M.Silcock, ?Rates of nitriding and nitride composition in austenitic steels,?Met. Sci., 12(2), 561 - 570 (1978).