Murach AA, Pelekhata OB, Soldatov VO. Approximation properties of solutions to multipoint boundary-value problems. Ukr. Mat. Zhurn. [Internet]. 2021 Mar. 11 [cited 2025 Dec. 5];73(3):341-53. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/6505