First Hochschild cohomology group and stable equivalence classification of Morita type of some tame symmetric algebras
  We use the dimension and the Lie algebra structure of the first Hochschild
cohomology group to distinguish some algebras of dihedral, semi-dihedral and
quaternion type up to stable equivalence of Morita type. In particular, we
complete the classification of algebras of dihedral type that was mostly
determined by Zhou and Zimmermann.
