M., Hadi J., Jarallah, Naz T., Ebrahiem, Sameera A., AND Rabee, Rajaa F.. " Theoretical Calculation of The Binding And Excitation Energies For 𝐍𝐢 𝟐𝟖 𝟓𝟖 30 Using Shell Model And Perturbation Theory" Ibn AL- Haitham Journal For Pure and Applied Science [Online], Volume 26 Number 3 (24 April 2017)