Kuchkarbayev, R. “MATHEMATICAL MODELING OF HEAT TRANSFER THROUGH SINGLE-LAYER AND MULTI-LAYER CYLINDRICAL WALLS IN BUILDINGS AND STRUCTURES”. Scientific and Technical Journal of Namangan Institute of Engineering and Technology, vol. 9, no. 4, Dec. 2024, pp. 264-8, doi:10.61151/stjniet.v9i4.686.