%0 Journal Article %A A. A. Bukhanko %T Plasticity condition connected with level lines of strain state surface for different deformation processes %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2013 %P 43-54 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2013_9_a6/ %G ru %F VSGU_2013_9_a6