%0 Journal Article %A Deng, Guixin %A Yuan, Pingzhi %T Isomorphic digraphs from powers modulo $p$ %J Czechoslovak Mathematical Journal %D 2011 %P 771-779 %V 61 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0025-y/ %R 10.1007/s10587-011-0025-y %G en %F 10_1007_s10587_011_0025_y