Benner, P., S. Chuiko, and O. Nesmelova. 2023. “Least-Squares Method in the Theory of Nonlinear Boundary-Value Problems Unsolved With Respect to the Derivative”. Ukrains’kyi Matematychnyi Zhurnal 75 (1): 38-51. https://doi.org/10.37863/umzh.v75i1.7408.