@article{DAN_1965_164_4_a11,
     author = {D. D. Ivlev and T. N. Martynova},
     title = {The properties of the general equations of the theory of perfect plasticity},
     journal = {Doklady Akademii Nauk},
     pages = {764--767},
     publisher = {mathdoc},
     volume = {164},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_164_4_a11/}
}