@article{VSGU_2009_2_a12,
     author = {L. V. Yakhno},
     title = {Principle of superposition of solutions for the problem of plane plasticity},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {140--145},
     publisher = {mathdoc},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2009_2_a12/}
}