@article{gao2022orthogonalization, title={An orthogonalization-free parallelizable framework for all-electron calculations in density functional theory}, author={Gao, Bin and Hu, Guanghui and Kuang, Yang and Liu, Xin}, journal={SIAM Journal on Scientific Computing}, volume={44}, number={3}, pages={B723--B745}, year={2022}, publisher={SIAM} }