Benner, P. .; Chuiko, S. .; Nesmelova, O. . Least-Squares Method in the Theory of Nonlinear Boundary-Value Problems Unsolved With Respect to the Derivative. Ukr. Mat. Zhurn. 2023, 75 (1), 38-51. https://doi.org/10.37863/umzh.v75i1.7408.