Pylypaka, S.F. and Nesvidomin, A.V. 2023. Calculation of a cylindrical surface that ensures a constant traction force or a constant amount of pressure of a material particle that moving through on it at a constant speed. Energy and Automation. 4 (Nov. 2023), 132–144. DOI:https://doi.org/10.31548/energiya4(68).2023.132.