Moduli of stable sheaves on ruled surfaces and their Picard groups.
Modulräume stabiler 2-Bündel auf Regelflächen.
Neron-Severi group for nonalgebraic elliptic surfaces I. Elliptic bundle case.
Normal projective surfaces with
Numerical sections on elliptic surfaces
On a conjecture of Mukai.
On curves with natural cohomology and their deficiency modules
The minimal free resolution of the Hartshorne-Rao module of a curve with natural cohomology is studied, and conditions are given on the degrees and the ranks of the terms of this resolution.
On Fano Manifolds of large index.
On large Picard groups and the Hasse Principle for curves and K3 surfaces
On Some Arithmetic Problems Related to the Hodge Cycles on the Fermat Varieties.
On Some Arithmetic Problems Related to the Hodge Cycles on the Fermat Varieties (Erratum).
On the class group of affinoid spaces
On the Complexity of the Projective Classification of Surfaces.
On the Kodaira Dimension of the Moduli Space of Curves.
On the motive of an algebraic surface.
On the Néron-Severi group of a singular variety.
On the Picard Group of Enriques Surfaces.
On the Picard number of a complex projective variety
Period relations and the Tate conjecture for Hubert modular surfaces.
Pic is a contracted functor.