%0 Journal Article %T To the question of definition of optimum service life of logging cars and their separate elements %A Yakovlev, K.. %A Sklyarov, P.. %K office properties, logging cars, service life %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov