TY - JOUR AU - Tripathi, Amitabha TI - The postage stamp problem and arithmetic in base $r$ JO - Czechoslovak Mathematical Journal PY - 2008 SP - 1097 EP - 1100 VL - 58 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMJ_2008__58_4_a15/ LA - en ID - CMJ_2008__58_4_a15 ER -