%0 Journal Article %A Walter Seaman %T Orthogonally pinched curvature tensors and applications. %J Mathematica Scandinavica %D 1991 %P 5-14 %V 69 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1991__69_1_167166/ %F MS2_1991__69_1_167166