@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}
}