%0 Journal Article %A V. A. Sorokin %T A formula for the number of Euler cycles of a complete graph $U_n$ %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1969 %V 24 %N 6 %U http://geodesic.mathdoc.fr/item/RM_1969_24_6_a4/ %G ru %F RM_1969_24_6_a4