@mastersthesis{Borutta1994G1Stetige,
  Author = {J{"o}rg Borutta},
  Title = {G1-stetige Flächen mit beliebiger Topologie},
  Month = aug,
  Year = {1994},
  School = {Universit{"a}t Karlsruhe (TH)},
  Type = {Studienarbeit}
}