@InProceedings{luther:DagSemProc.06491.13,
  author =	{Luther, Wolfram},
  title =	{{Rule-based search in historical text databases - Visualization techniques}},
  booktitle =	{Digital Historical Corpora- Architecture, Annotation, and Retrieval},
  pages =	{1--3},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6491},
  editor =	{Lou Burnard and Milena Dobreva and Norbert Fuhr and Anke L\"{u}deling},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06491.13},
  URN =		{urn:nbn:de:0030-drops-10513},
  doi =		{10.4230/DagSemProc.06491.13},
  annote =	{Keywords: Non-standard spellings, visualization techniques, treemaps, rule base optimization}
}