Kangro, Inga, and Otu Vaarmann. “Some Iterative Regularized Methods for Highly Nonlinear Least Squares Problems”. Mathematical Modelling and Analysis 14, no. 2 (June 30, 2009): 179-186. Accessed April 26, 2024. https://journals.vilniustech.lt/index.php/MMA/article/view/6536.