%0 Journal Article %A Schwarz, Štefan %T The Euler-Fermat theorem for the semigroup of circulant Boolean matrices %J Czechoslovak Mathematical Journal %D 1980 %P 135-141 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101663/ %R 10.21136/CMJ.1980.101663 %G en %F 10_21136_CMJ_1980_101663