%0 Journal Article %A Félix Cabello Sánchez %T A theorem on isotropic spaces %J Studia Mathematica %D 1999 %P 257-260 %V 133 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-133-3-257-260/ %R 10.4064/sm-133-3-257-260 %G en %F 10_4064_sm_133_3_257_260