La conjecture de R. Hartshorne pour les hypersurfaces lisses de Pn.
La semi-caractéristique d’Euler-Poincaré des faisceaux -quadratiques sur un schéma de Cohen-Macaulay
Lefschetz theorems on quasi-projective varieties
Linking pairings on singular spaces.
Local cohomology and the connectedness dimension in algebraic varieties.
Local geometry of smooth curves passing through rational double points.