@book{GrimmerRodeZimmermann1998,
  author    = {Ellen Grimmer and J{\"u}rgen Rode and Heike Hildegard Zimmermann},
  title     = {Sportkartei 5.-10. : Bd. 6 Gymnastik, Tanz},
  volume    = {6},
  isbn      = {3-89291-849-X},
  year      = {1998},
}