%0 Journal Article %A V. V. Grushin %T Isolated singularities of solutions of difference equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1961 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1961_16_2_a19/ %G ru %F RM_1961_16_2_a19