@article{VSGTU_2006_43_a9,
     author = {V. V. Struzhanov},
     title = {Elastoplastic medium with a softening. {Part~2.}  {Defining} relations for complex stress state},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {68--80},
     publisher = {mathdoc},
     number = {43},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2006_43_a9/}
}