@article{VSGTU_2013_1_a18, author = {A. A. Bukhan'ko}, title = {Plasticity condition related with level lines of strain }, journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences}, pages = {199--206}, publisher = {mathdoc}, number = {1}, year = {2013}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/VSGTU_2013_1_a18/} }