%0 Journal Article %A S. L. Tonkonog %A L. D. Èskin %T On the accuracy of approximate symmetries of equations of the dynamics of a non-Newtonian fluid and their invariant solutions.~II %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2003 %P 54-58 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2003_9_a9/ %G ru %F IVM_2003_9_a9