Linturi J, Okumu J, Singh CS. A Distorted Wave Method Applied to Study the 23 P Excitation of Helium Atom by Electron Impact. ijp [Internet]. 3Nov.2016 [cited 10Dec.2025];22(2):35-0. Available from: http://ijphysics.fi.itb.ac.id/index.php/ijp/article/view/231