“Effect of Adding Nitrogen Mixed With The Radon Gas Line and ‎Roasting The Mixture For Production The Final Interactive Positive ‎Results”. Journal of University of Babylon for Engineering Sciences 31, no. 02 (March 20, 2023): 12–28. Accessed April 16, 2025. https://journalofbabylon.com/index.php/JUBES/article/view/4512.