@InProceedings{gibney_et_al:LIPIcs.ESA.2019.51,
  author =	{Gibney, Daniel and Thankachan, Sharma V.},
  title =	{{On the Hardness and Inapproximability of Recognizing Wheeler Graphs}},
  booktitle =	{27th Annual European Symposium on Algorithms (ESA 2019)},
  pages =	{51:1--51:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-124-5},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{144},
  editor =	{Bender, Michael A. and Svensson, Ola and Herman, Grzegorz},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ESA.2019.51},
  URN =		{urn:nbn:de:0030-drops-111728},
  doi =		{10.4230/LIPIcs.ESA.2019.51},
  annote =	{Keywords: Burrows–Wheeler transform, string algorithms, suffix trees, NP-completeness}
}