@InProceedings{intrigila_et_al:LIPIcs.FSCD.2017.20,
  author =	{Intrigila, Benedetto and Manzonetto, Giulio and Polonsky, Andrew},
  title =	{{Refutation of Sall\'{e}'s Longstanding Conjecture}},
  booktitle =	{2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017)},
  pages =	{20:1--20:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-047-7},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{84},
  editor =	{Miller, Dale},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2017.20},
  URN =		{urn:nbn:de:0030-drops-77236},
  doi =		{10.4230/LIPIcs.FSCD.2017.20},
  annote =	{Keywords: lambda calculus, observational equivalence, B\"{o}hm trees, omega-rule}
}