M. VASILESCU et M. DOBRESCU, The Importance of Nitrogen in the Heat Treating of Ferrous and Non-Ferrous Metals and Alloys, The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, vol. 42, nᵒ 1, p. 31-35, mars 2019.