@book{KemperW09,
  title = {Übungsbuch Datenbanksysteme, 2. Auflage},
  author = {Alfons Kemper and Martin Wimmer},
  year = {2009},
  researchr = {https://researchr.org/publication/KemperW09},
  cites = {0},
  citedby = {0},
  publisher = {Oldenbourg},
  isbn = {978-3-486-59001-2},
}