%0 Journal Article %A M. V. Shamolin %T Problems of differential and topological diagnostics. Part~3. The checking problem %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2019 %P 36-47 %V 25 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2019_25_4_a4/ %G ru %F VSGU_2019_25_4_a4