Media type: E-Article Title: Ultrafilters on words for a fragment of logic Contributor: Gehrke, Mai; Krebs, Andreas; Pin, Jean-Éric Published: Elsevier BV, 2016 Published in: Theoretical Computer Science, 610 (2016), Seite 37-58 Language: English DOI: 10.1016/j.tcs.2015.08.007 ISSN: 0304-3975 Origination: Footnote: Access State: Open Access