Karalevich, U. V.; Medvedev, D. G. The Influence of the Length of Heat Sources on the External Border on the Temperature Distribution in Profiled Polar-Orthotropic Ring Plates Taking into Account There Heat Exchange With the External Environment. Журнал Белорусского государственного университета. Математика. Информатика 2020, No. 3, 86-91. https://doi.org/10.33581/2520-6508-2020-3-86-91.