@INBOOK{Ritter2007,
  author    = {Norbert Ritter},
  title     = {Verteilte und föderierte Datenbanksysteme},
  booktitle = {},
  chapter   = {},
  pages     = {394-426},
  publisher = {Fachbuchverlag Leipzig i. Carl Hanser Verlag Leipzig},
  year      = {2007},
  month     = {8}
}