%0 Journal Article %A Amos Ron %T A characterization of the approximation order for multivariate spline spaces %J Studia Mathematica %D 1991 %P 73-90 %V 98 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-98-1-73-90/ %R 10.4064/sm-98-1-73-90 %G en %F 10_4064_sm_98_1_73_90