%0 Journal Article %A Ernst-Ulrich Gekeler %T On the cuspidal divisor class group of a Drinfeld modular curve %J Documenta mathematica %D 1997 %P 351-374 %V 2 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/34/ %R 10.4171/dm/34 %F 10_4171_dm_34