@article{Liu_Zhang_2018, title={Energies and quantum defects of 1s2ng states for lithium-like ions from scandium to zinc}, volume={71}, url={https://www.cetjournal.it/index.php/cet/article/view/CET1871110}, DOI={10.3303/CET1871110}, journal={Chemical Engineering Transactions}, author={Liu, Xin and Zhang, Jingchao}, year={2018}, month={Dec.}, pages={655-660}