@incollection{WittPoenninghaus2016,
  author    = {Andreas Witt and Jens P{\"o}nninghaus},
  title     = {Beispiel einer komplexen DTD: DocBook},
  series = {XML},
  editor    = {Werner K{\"o}hler and Heinz Wittenbrink and Carsten Bormann},
  publisher = {TEIA Lehrbuch Verlag},
  address   = {Berlin},
  isbn      = {393553969X},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:mh39-45663},
  pages     = {296 -- 344},
  year      = {2016},
  language  = {de}
}