%0 Journal Article %A Beelen, Peter %A Garcia, Arnaldo %A Stichtenoth, Henning %T On ramification and genus of recursive towers. %J Portugaliae mathematica %D 2005 %P 231-243 %V 62 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_2005__62_2_52665/ %G en %F PORMA_2005__62_2_52665