%0 Journal Article %A Tripathi, Amitabha %T The postage stamp problem and arithmetic in base $r$ %J Czechoslovak Mathematical Journal %D 2008 %P 1097-1100 %V 58 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2008__58_4_a15/ %G en %F CMJ_2008__58_4_a15