@InProceedings{kroll_et_al:LIPIcs.ICDT.2016.22,
  author =	{Kr\"{o}ll, Markus and Pichler, Reinhard and Skritek, Sebastian},
  title =	{{On the Complexity of Enumerating the Answers to Well-designed Pattern Trees}},
  booktitle =	{19th International Conference on Database Theory (ICDT 2016)},
  pages =	{22:1--22:18},
  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.2016.22},
  URN =		{urn:nbn:de:0030-drops-57912},
  doi =		{10.4230/LIPIcs.ICDT.2016.22},
  annote =	{Keywords: SPARQL, Pattern Trees, CQs, Enumeration, Complexity}
}