@InProceedings{figueira:LIPIcs.ICDT.2020.9,
  author =	{Figueira, Diego},
  title =	{{Containment of UC2RPQ: The Hard and Easy Cases}},
  booktitle =	{23rd International Conference on Database Theory (ICDT 2020)},
  pages =	{9:1--9:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-139-9},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{155},
  editor =	{Lutz, Carsten and Jung, Jean Christoph},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICDT.2020.9},
  URN =		{urn:nbn:de:0030-drops-119330},
  doi =		{10.4230/LIPIcs.ICDT.2020.9},
  annote =	{Keywords: Regular Path Queries (RPQ), 2RPQ, CRPQ, C2RPQ, UC2RPQ, graph databases, containment, inclusion, equivalence, dichotomy, graph measure, bridge-width (bridgewidth), minimal edge separator, minimal cut-set, max-cut, tree-width (treewidth)}
}