%0 Journal Article %A V. A. Skvortsov %T An example of a $U$-set for the Walsh system %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1982 %P 53-55 %N 5 %U http://geodesic.mathdoc.fr/item/VMUMM_1982_5_a14/ %G ru %F VMUMM_1982_5_a14