%0 Journal Article %T REGULATIONS OF ROUGHNESS PARAMETERS FOR MACHINERY FUNCTIONAL SURFACES IN TECHNOLOGICAL DOCUMENTATION %A Nagorkin, M.N. %A Fedorov, V.P. %A Pyrikov, I.L. %A Toporkov, M.P. %K parameters of surface quality, statistical laws of distribution, mathematical expectation, normal deviation, roughness parameters %J Bulletin of Bryansk state technical university %D 2019 %N 2019 %P 8 %I Bryansk State Technical University