%0 Journal Article %A E. S. Ratner %A Yu. Z. Matskovskaya %T On the connection between threshold contrast and the object form %J Doklady Akademii Nauk %D 1973 %P 313-314 %V 213 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_213_2_a16/ %G ru %F DAN_1973_213_2_a16