A. Huseynov, A. Abdullayeva, and I. Mamedov, “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, no. 8, pp. 239–246, Nov. 2025.