Hyperelliptic Curves with zero Hasse-Witt-Matrix.
The Deuring-Safarevic Formula Revisited.
Some p-adic Galois Representations for Curves in Characteristic p.
Representations of automorphisms on differentials of function fields of characteristic p.
Weierstrass Points in Characteristic p.
The group of automorphisms of algebraic function fields.
Subfields of cyclic p-extensions of K(x).
A Hauptsatz of L. E. Dickson and Artin-Schreier extensions.
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