A. F. Ahmed, K. A. Aadim, and A. A. Yousef, “Spectroscopic study of AL nitrogen plasma produced by DC glow discharge”, Iraqi Journal of Science, vol. 59, no. 1C, pp. 494–501, Mar. 2018, Accessed: Jun. 21, 2026. [Online]. Available: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/237