A Note on Rationality of Divisor Classes on Algebraic Schemata (Separable Case).
A construction of generalized Jacobian varieties by group extensions.
Yoneda Extensions in Abelian Categories.
Algebraic Group Schemes in Characteristic Zero are Reduced.
Sur le schéma de Picard
Deformations and Liftings of Finite, Commutative Group Schemes.
Representability of Group Functors, and Automorphisms of Algebraic Schemes.
A construction of an abelian variety with a given endomorphism algebra
On the deformation of Artin-Schreier to Kummer
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