• Quotients and atoms of reversible languagesTamm, HellisFormal Methods : FM 2019 International Workshops, Porto, Portugal, October 7-11, 2019, Revised Selected Papers, Part II2020 / p. 443-455 https://doi.org/10.1007/978-3-030-54997-8_28 https://www.scopus.com/sourceid/25674 https://www.scopus.com/record/display.uri?eid=2-s2.0-85089715772&origin=inward&txGid=fec30d6a2b0cd2efd40d2a110267e002