Bhatia, A. K. “Ionization of the \(1S\) and \(nS\) States of the Atomic Hydrogen by Positron and Electron Impacts”. Journal of Atomic, Molecular, Condensed Matter and Nano Physics 12, no. 1 (October 26, 2025): 1–8. Accessed October 26, 2025. https://www.journals.rgnpublications.com/index.php/jamcnp/article/view/3436.