1.
Bhatia AK. Excitation of \((1s2s)\) \(^{1}S\), the Singlet State of Helium Atoms by Positron Impact. Jour. Atomic Mole. Conden. Nano Phys [Internet]. 2025 Oct. 26 [cited 2026 Apr. 4];12(1):55-62. Available from: https://rgnpublications.com/journals/index.php/jamcnp/article/view/3180