TY - JOUR AU - Somer, Lawrence AU - Křížek, Michal TI - The structure of digraphs associated with the congruence $x^k\equiv y \pmod n$ JO - Czechoslovak Mathematical Journal PY - 2011 SP - 337 EP - 358 VL - 61 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0079-x/ DO - 10.1007/s10587-011-0079-x LA - en ID - 10_1007_s10587_011_0079_x ER -