@InProceedings{freydenberger_et_al:LIPIcs.ICDT.2016.17,
  author =	{Freydenberger, Dominik D. and Holldack, Mario},
  title =	{{Document Spanners: From Expressive Power to Decision Problems}},
  booktitle =	{19th International Conference on Database Theory (ICDT 2016)},
  pages =	{17:1--17:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-002-6},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{48},
  editor =	{Martens, Wim and Zeume, Thomas},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICDT.2016.17},
  URN =		{urn:nbn:de:0030-drops-57867},
  doi =		{10.4230/LIPIcs.ICDT.2016.17},
  annote =	{Keywords: Information extraction, document spanners, regular expressions, regex, patterns, word equations, decision problems, descriptional complexity}
}