%0 Journal Article %A B. A. Trakhtenbrot %T The theory of non-repeating contact schemes %J Informatics and Automation %D 1958 %P 226-269 %V 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1958_51_a6/ %G ru %F TRSPY_1958_51_a6