@article{zhou_zhang_2010,  title={Global convergence of a regularized factorized quasi-Newton method for nonlinear least squares problems},  volume={29},  ISSN={1807-0302},  url={https://doi.org/10.1590/S1807-03022010000200006},  DOI={10.1590/S1807-03022010000200006},  number={2},  journal={Computational & Applied Mathematics},  publisher={Sociedade Brasileira de Matemática Aplicada e Computacional},  author={Zhou, Weijun and Zhang, Li},  year={2010},  month={Jun},  pages={195–214} }