- Valery Karachik, “Dirichlet and Neumann Boundary Value Problems for the Polyharmonic Equation in the Unit Ball”, Mathematics, 9, № 16, 2021, 1907

- V. V. Karachik, “Neumann Type Problems for the Polyharmonic Equation in Ball”, J Math Sci, 249, № 6, 2020, 974

- Bakytbek Koshanov, Maksat Bakytbek, 1, Extended Abstracts MWCAPDE 2023, 2024, 167

- V. V. Karachik, “Class of Neumann-Type Problems for the Polyharmonic Equation in a Ball”, Comput. Math. and Math. Phys., 60, № 1, 2020, 144

- A. P. Soldatov, “On the Fredholm Property and Index of the Generalized Neumann Problem”, Diff Equat, 56, № 2, 2020, 212

- V. V. Karachik, “Sufficient Conditions for Solvability of One Class of Neumann-Type Problems for the Polyharmonic Equation”, Comput. Math. and Math. Phys., 61, № 8, 2021, 1276

- Tynysbek Sh. Kal'menov, Gaukhar D. Arepova, “Representation of solution of the Dirichlet problem for the Laplace equation in the form of a generalized convolution”, Complex Variables and Elliptic Equations, 64, № 5, 2019, 816

- Bakytbek Koshanov, Alexander Soldatov, 1997, 2018, 020013

- V.V. Karachik, “SOLVABILITY CONDITIONS OF THE N2 NEUMANN-TYPE PROBLEM FOR POLYHARMONIC EQUATION IN A BALL”, MMPh, 12, № 2, 2020, 13

- T. K. Yuldashev, K. Kh. Shabadikov, “Mixed Problem for a Higher-Order Nonlinear Pseudoparabolic Equation”, J Math Sci, 254, № 6, 2021, 776
