2015. Calculation of Radial Electron-Electron Distribution function and Expectation Values for Li-Atom in Excited States 1s 2p, 1s 3p and 1s 3d . Baghdad Science Journal. 12, 3 (Sep. 2015), 591–596. DOI:https://doi.org/10.21123/bsj.2015.12.3.591-596.