Ali, S., A. Q. Laghari, A. Iqbal, G. M. Memon, M. Abro, I. A. . Memon, F. H. . Channa, A. S. Channa, K. Muhammad, and S. A. Noonari. “Investigation of Morphological and Mechanical Properties of Hardened and Tempered AISI 4340 Steel”. Journal of the Serbian Chemical Society, vol. 91, no. 5, June 2026, pp. 515-27, doi:10.2298/JSC251123012A.