@TechReport{      MayrVorbehalten,
  Author        = "Mayr, Ernst W. and Vorbehalten, Alle Rechte",
  date-added    = "2013-11-11 14:08:04 +0000",
  date-modified = "2013-11-11 14:08:49 +0000",
  Title         = "The Complexity of the Equivalence Problem for Commutative Semigroups",
  Year          = "1995",
  File          = "The Complexity of the Equivalence Problem for Commutative Semigroups - Mayr, Vorbehalten (0) (0) - a - a - u.pdf"
}

@TechReport{ MayrVorbehalten, Author = "Mayr, Ernst W. and Vorbehalten, Alle Rechte", date-added = "2013-11-11 14:08:04 +0000", date-modified = "2013-11-11 14:08:49 +0000", Title = "The Complexity of the Equivalence Problem for Commutative Semigroups", Year = "1995", File = "The Complexity of the Equivalence Problem for Commutative Semigroups - Mayr, Vorbehalten (0) (0) - a - a - u.pdf" }