Bhatia, Anand K. “Free-Free Transitions of the Hydrogenic Systems Inside A Dense Plasma Irradiated by A Laser Field”. Journal of Atomic, Molecular, Condensed Matter and Nano Physics 2, no. 1 (July 30, 2015): 55–72. Accessed December 5, 2025. https://www.rgnpublications.com/journals/index.php/jamcnp/article/view/290.