%0 Journal Article %T THE POWER EFFICIENCY CALCULATION TECHNIQUE FOR MOBILE MACHINE-TRACTOR AGGREGATE USE %A Zhuravlev, S.Y. %K assessment, energy consumption costs, functioning efficiency, mathematical expectation, energy indices, optimum modes, machine and tractor aggregate, bio-energetic coefficient of efficiency %J Bulletin of KSAU %D 2013 %N %P 9 %I Krasnoyarsk State Agrarian University