MASLIUK, H.; PELEKHATA, O.; SOLDATOV, V. Approximation properties of multipoint boundary-value problems. Methods of Functional Analysis and Topology, [S. l.], v. 26, n. 2, p. 119–125, 2020. DOI: https://doi.org/10.31392/MFAT-npu26_2.2020.04. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/752. Acesso em: 13 dec. 2025.