%0 Journal Article %A Araujo, José %A Keilhauer, Guillermo %T Natural tensor fields of type $(0,2)$ on the tangent and cotangent bundles of a semi-Riemannian manifold %J Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica %D 2000 %P -16 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUPO_2000__39_1_a0/ %G en %F AUPO_2000__39_1_a0