@InProceedings{senizergues_et_al:LIPIcs.ICALP.2018.139,
  author =	{S\'{e}nizergues, G\'{e}raud and Wei{\ss}, Armin},
  title =	{{The Isomorphism Problem for Finite Extensions of Free Groups Is In PSPACE}},
  booktitle =	{45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)},
  pages =	{139:1--139:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-076-7},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{107},
  editor =	{Chatzigiannakis, Ioannis and Kaklamanis, Christos and Marx, D\'{a}niel and Sannella, Donald},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2018.139},
  URN =		{urn:nbn:de:0030-drops-91437},
  doi =		{10.4230/LIPIcs.ICALP.2018.139},
  annote =	{Keywords: virtually free groups, context-free groups, isomorphism problem, structure tree, graph of groups}
}