Afidah, Zidan, 		Supriadi, Bambang, AND 		Handayani, Rif'ati Dina.
" Expectation and Uncertainty of Helium Ion (He^+ ) Electron Position in the Position Space Wave Function at Quantum Numbers n ? 4" <em>BULETIN FISIKA</em> [Online], Volume 26 Number 1 (22 May 2025)