@InProceedings{gourves_et_al:LIPIcs.ISAAC.2021.36,
  author =	{Gourv\`{e}s, Laurent and Harutyunyan, Ararat and Lampis, Michael and Melissinos, Nikolaos},
  title =	{{Filling Crosswords Is Very Hard}},
  booktitle =	{32nd International Symposium on Algorithms and Computation (ISAAC 2021)},
  pages =	{36:1--36:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-214-3},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{212},
  editor =	{Ahn, Hee-Kap and Sadakane, Kunihiko},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ISAAC.2021.36},
  URN =		{urn:nbn:de:0030-drops-154690},
  doi =		{10.4230/LIPIcs.ISAAC.2021.36},
  annote =	{Keywords: Crossword Puzzle, Treewidth, ETH}
}