%0 Journal Article %A A. V. Kolchin %T Equations that contain an unknown permutation %J Diskretnaya Matematika %D 1994 %P 100-115 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1994_6_1_a6/ %G ru %F DM_1994_6_1_a6