- V.V. Karachik, “A SOLUTION TO THE RIQUIER–NEYMANN PROBLEM FOR POLYHARMONIC EQUATIONS IN A BALL”, MMPh, 15, № 1, 2023, 26

- V. V Karachik, “Representation of the Green’s Function of the Dirichlet Problem for the Polyharmonic Equation in the Ball”, Differencialʹnye uravneniâ, 59, № 8, 2023, 1057

- V. V. Karachik, “Green’s Function of the Riquier–Neumann Problem for the Polyharmonic Equation in the Unit Ball”, Comput. Math. and Math. Phys., 64, № 5, 2024, 1015

- V. V Karachik, “GREEN’S FUNCTION FOR THE RIEMANN–NEUMANN PROBLEM FOR A POLYHARMONIC EQUATION IN THE UNIT SPHERE”, Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, 64, № 5, 2024, 791
