%0 Journal Article %T MOTION EQUATION OF TOOTH BLADE OF SPIRAL-PLATE WORKING UNIT IN SPACE %A Shiriyazdanov , R.. %A Pikmullin, G.V. %A Yunusov, R.. %A Bulgariev, G.G. %K spiral-plate working unit, soil, tooth blade, circular helix. %J Vestnik of Kazan State Agrarian University %D 2016 %N 11 %P 3 %I Kazan state agrarian University