Bhatia, Anand K. “Hybrid Theory of Scattering of Positrons from Helium Atoms”. Journal of Atomic, Molecular, Condensed Matter and Nano Physics 11, no. 1 (December 31, 2024): 1–5. Accessed June 17, 2025. http://www.journals.rgnpublications.com/index.php/jamcnp/article/view/2671.