@InProceedings{jez_et_al:LIPIcs.STACS.2010.2478,
  author =	{Jez, Artur and Okhotin, Alexander},
  title =	{{On Equations over Sets of Integers}},
  booktitle =	{27th International Symposium on Theoretical Aspects of Computer Science},
  pages =	{477--488},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-16-3},
  ISSN =	{1868-8969},
  year =	{2010},
  volume =	{5},
  editor =	{Marion, Jean-Yves and Schwentick, Thomas},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.STACS.2010.2478},
  URN =		{urn:nbn:de:0030-drops-24780},
  doi =		{10.4230/LIPIcs.STACS.2010.2478},
  annote =	{Keywords: Language equations, computability, arithmetical hierarchy, hyper-arithmetical hierarchy}
}