@InProceedings{molinalovett_et_al:LIPIcs.ICALP.2019.121,
  author =	{Molina Lovett, Antonio and Shallit, Jeffrey},
  title =	{{Optimal Regular Expressions for Permutations}},
  booktitle =	{46th International Colloquium on Automata, Languages, and Programming (ICALP 2019)},
  pages =	{121:1--121:12},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-109-2},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{132},
  editor =	{Baier, Christel and Chatzigiannakis, Ioannis and Flocchini, Paola and Leonardi, Stefano},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2019.121},
  URN =		{urn:nbn:de:0030-drops-106978},
  doi =		{10.4230/LIPIcs.ICALP.2019.121},
  annote =	{Keywords: regular expressions, lower bounds, divide-and-conquer}
}