@phdthesis{Siebert,
  type      = {Bachelor Thesis},
  author    = {Alexander Siebert},
  title     = {Schiedsrichterschwund im Amateurfu{\"s}ball : Probleme, Ursachen, Konsequezen},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:mit1-opus-33121},
  abstract  = {nicht vorhanden},
  language  = {de}
}