TY - JOUR AU - Andrzej Schinzel TI - A refinement of a theorem of Gerst on power residues JO - Acta Arithmetica PY - 1970 SP - 161 EP - 168 VL - 17 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa-17-2-161-168/ DO - 10.4064/aa-17-2-161-168 LA - en ID - 10_4064_aa_17_2_161_168 ER -