@InProceedings{zhang_et_al:LIPIcs.ICALP.2020.141,
  author =	{Zhang, Wenbo and Yin, Qiang and Long, Huan and Xu, Xian},
  title =	{{Bisimulation Equivalence of Pushdown Automata Is Ackermann-Complete}},
  booktitle =	{47th International Colloquium on Automata, Languages, and Programming (ICALP 2020)},
  pages =	{141:1--141:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-138-2},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{168},
  editor =	{Czumaj, Artur and Dawar, Anuj and Merelli, Emanuela},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2020.141},
  URN =		{urn:nbn:de:0030-drops-125482},
  doi =		{10.4230/LIPIcs.ICALP.2020.141},
  annote =	{Keywords: PDA, Bisimulation, Equivalence checking}
}