Combined Boundary Problem of 2D in the Geometrical Middle -1D in the Middle-1D Multi-Point Type in the Non-Classical Treatment for 4D Bianchi Equation With Non-Smooth Coefficients, Arising in the Modeling of Vibration Processes and Integral Representation. MCIT 2025, вип. 8, 239-246. https://doi.org/10.31713/MCIT.2025.073.