Шифрин, Б.М., and А.В. Извалов. “ Keldysh Model of Interaction of Air Wheel With Supporting Plane”.
Problems of Tribology
75, no. 1 (June 29, 2015): 92–98. Accessed April 5, 2025. https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/451.