@InProceedings{chalopin_et_al:LIPIcs.ICALP.2017.101,
  author =	{Chalopin, J\'{e}r\'{e}mie and Chepoi, Victor},
  title =	{{A Counterexample to Thiagarajan's Conjecture  on Regular Event Structures}},
  booktitle =	{44th International Colloquium on Automata, Languages, and Programming (ICALP 2017)},
  pages =	{101:1--101:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-041-5},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{80},
  editor =	{Chatzigiannakis, Ioannis and Indyk, Piotr and Kuhn, Fabian and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2017.101},
  URN =		{urn:nbn:de:0030-drops-74192},
  doi =		{10.4230/LIPIcs.ICALP.2017.101},
  annote =	{Keywords: Discrete event structures, Trace automata, Median graphs and CAT(0) cube Complexes, Unfoldings and universal covers}
}