@article{VSGU_2013_9_a6,
     author = {A. A. Bukhanko},
     title = {Plasticity condition connected with level lines of strain state surface for different deformation processes},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {43--54},
     publisher = {mathdoc},
     number = {9},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2013_9_a6/}
}