• Quotients and atoms of reversible languagesTamm, HellisTheoretical Computer Science2022 / p. 33-45 https://doi.org/10.1016/j.tcs.2022.02.023 https://www.scopus.com/sourceid/20571 https://www.scopus.com/record/display.uri?eid=2-s2.0-85125740252&origin=inward&txGid=8f348c5516ec713375880cc196a8c98a https://jcr.clarivate.com/jcr-jp/journal-profile?journal=THEOR%20COMPUT%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000830247200004
  • Theory of átomataBrzozowski, Janusz; Tamm, HellisTheoretical computer science2014 / p. 13-27 : ill https://doi.org/10.1016/j.tcs.2014.04.016 https://www.scopus.com/sourceid/20571 https://www.scopus.com/record/display.uri?eid=2-s2.0-84926689142&origin=inward&txGid=bf428d200d54b0c2ba0cb204a9b3c395 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=THEOR%20COMPUT%20SCI&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000338598500002