%0 Journal Article %A D. A. Ulkin %T Modeling of primary instability forms of the softening elastic-plastic bodies %J Matematičeskoe modelirovanie %D 2010 %P 103-114 %V 22 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_2010_22_12_a7/ %G ru %F MM_2010_22_12_a7