%0 Journal Article %A Ahmad, Uzma %A Syed, Husnine %T On the heights of power digraphs modulo $n$ %J Czechoslovak Mathematical Journal %D 2012 %P 541-556 %V 62 %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-012-0028-3/ %R 10.1007/s10587-012-0028-3 %G en %F 10_1007_s10587_012_0028_3