%0 Journal Article %T MATHEMATICAL MODEL OF INTERACTION OF FREE ROLLING FLAT DISK WITH SOIL %A Akimov, A.P. %A Konstantinov, Y.V. %A Mazyarov, V.P. %K mathematical model, free-spinning disk, interaction with soil, soil reactions, power characteristics. %J Vestnik of Kazan State Agrarian University %D 2018 %N 13 %P 5 %I Kazan state agrarian University