Гаєв Є. LAMINAR FLOW THROUGH A TUBE WITH AN EASILY PENETRABLE ROUGHNESS NEAR AXIS. Proceedings of National Aviation University [Internet]. 2012 Dec. 19 [cited 2024 Dec. 21];53(4):74-9. Available from: https://jrnl.nau.edu.ua/index.php/visnik/article/view/3512