%0 Journal Article %A Matusevich, Laura %T Weyl closure of hypergeometric systems. %J Collectanea mathematica %D 2009 %P 147-158 %V 60 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CLTM_2009_2009_1_a11/ %G en %F CLTM_2009_2009_1_a11