Modified Atomic Orbital Calculations for $(1s,nl)^3L^{\pi}$ and $_2 (1,0)_n^{±1,3}S^e$ Excited States of He Isoelectronic Sequence. JAMS [Internet]. 2010 Jan. 1 [cited 2025 Dec. 6];1(3):224-42. Available from: https://global-sci.com/index.php/jams/article/view/14569