%0 Journal Article %A Carlo Alberto Mantica %A Luca Guido Molinari %T Extended Derdziński–Shen theorem for curvature tensors %J Colloquium Mathematicum %D 2012 %P 1-6 %V 128 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm128-1-1/ %R 10.4064/cm128-1-1 %G en %F 10_4064_cm128_1_1