Boolean automata and atoms of regular languagesTamm, Hellis46th International Symposium on Mathematical Foundations of Computer Science, MFCS 2021, August 23-27, 2021, Tallinn, Estonia : proceedings2021 / art. 86, p. 86:1–86:13 https://doi.org/10.4230/LIPIcs.MFCS.2021.86 Conference Proceedings at Scopus Article at Scopus

Complexity of atoms of regular languagesBrzozowski, Janusz; Tamm, HellisInternational Journal of Foundations of Computer Science2013 / p. 1009 - 1027 https://doi.org/10.1142/S0129054113400285 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Duality of lattices associated to left and right quotientsBell, Jason; Smertnig, Daniel; Tamm, Hellis16th International Conference on Automata and Formal Languages, AFL 2023, Eger, 5 September - 7 September 20232023 / p. 35-50 https://doi.org/10.4204/EPTCS.386.5 Conference proceedings at Scopus Article at Scopus Article at WOS

Lower bound methods for the size of nondeterministic finite automata revisitedTamm, Hellis; Merwe, Brink van derLanguage and Automata Theory and Applications : 11th International Conference, LATA 2017, Umeå, Sweden, March 6-9, 2017 : proceedings2017 / p. 261-272 https://doi.org/10.1007/978-3-319-53733-7_19 Conference proceedings at Scopus Article at Scopus Article at WOS

New interpretation and generalization of the Kameda-Weiner methodTamm, Hellis43rd International Colloquium on Automata, Languages, and Programming (ICALP 2016)2016 / p. 116:1-116:12 http://dx.doi.org/10.4230/LIPIcs.ICALP.2016.116 Conference Proceedings at Scopus Article at Scopus

Quotients and atoms of reversible languagesTamm, HellisTheoretical Computer Science2022 / p. 33-45 https://doi.org/10.1016/j.tcs.2022.02.023 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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 Conference proceedings at Scopus Article at Scopus

Theoretical aspects of symbolic automataTamm, Hellis; Veanes, MargusSOFSEM 2018 : Theory and Practice of Computer Science : 44th International Conference on Current Trends in Theory and Practice of Computer Science, Krems, Austria, January 29 - February 2, 2018 : proceedings2018 / p. 428-441 https://doi.org/10.1007/978-3-319-73117-9_30 Conference Proceedings at Scopus Article at Scopus Conference Proceedings at WOS Article at WOS

Theory of átomataBrzozowski, Janusz; Tamm, HellisTheoretical computer science2014 / p. 13-27 : ill https://doi.org/10.1016/j.tcs.2014.04.016 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Yet another canonical nondeterministic automatonMaarand, Hendrik; Tamm, HellisDescriptional Complexity of Formal Systems : 24th IFIP WG 1.02 International Conference, DCFS 2022, Debrecen, Hungary, August 29-31, 2022, proceedings2022 / p. 184-196 : ill https://doi.org/10.1007/978-3-031-13257-5_14 Conference Proceedings at Scopus Article at Scopus Conference Proceedings at WOS Article at WOS

Yet another canonical nondeterministic automatonMaarand, Hendrik; Tamm, HellisTheoretical computer science2024 / art. 114581, 15 p. : ill https://doi.org/10.1016/j.tcs.2024.114581 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS