The moduli and the global period mapping of surfaces with : a counterexample to the global Torelli problem
Babbage's Conjecture, Contact of Surfaces, Symmetric Determinantal Varieties and Applications.
Everywhere non reduced moduli spaces.
Automorphisms of rational double points and moduli spaces of surfaces of general type
Bounds for stable bundles and degrees of Weierstrass schemes.
Surfaces with K2 = 2, pg = 1, q = 0
Linear systems on quasi-abelian varieties.
Fibred Kähler and quasi-projective groups.
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