%0 Journal Article %A Vincenzo Moscatelli %T Strongly nonnorming subspaces and prequojections %J Studia Mathematica %D 1989 %P 249-254 %V 95 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-95-3-249-254/ %R 10.4064/sm-95-3-249-254 %G en %F 10_4064_sm_95_3_249_254