@article{IVM_2003_8_a6,
     author = {S. L. Tonkonog and L. D. \`Eskin},
     title = {On the accuracy of approximate symmetries of equations of the dynamics of a {non-Newtonian} fluid and their invariant {solutions.~I}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {53--62},
     publisher = {mathdoc},
     number = {8},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2003_8_a6/}
}