• A transfer function approach to the realisation problem of nonlinear systemsHalas, Miroslav; Kotta, ÜlleInternational journal of control2012 / p. 320-331
• Algebraic necessary and sufficient condition for difference flatnessKaldmäe, ArvoInternational Journal of Control2021 / 8 p https://doi.org/10.1080/00207179.2021.1908598 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85103637888&origin=inward&txGid=a37883eb2fc218fb85e6f1e2e44dc548 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000636953400001
• Comments on 'A new kind of nonlinear disturbance observer for nonlinear systemswith applications to cruise control of air-breathing hypersonic vehicles'Kaldmäe, Arvo; Kotta, ÜlleInternational journal of control2020 / p. 1725 https://doi.org/10.1080/00207179.2018.1529436 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85054348932&origin=inward&txGid=0140a9a39d82b79a43dcf1042d7aa76d https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000544485300021
• Degree of Dieudonne determinant defines the order of nonlinear systemKotta, Ülle; Belikov, Juri; Halas, Miroslav; Leibak, AlarInternational journal of control2019 / p. 518-527 https://doi.org/10.1080/00207179.2017.1361042 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85028537902&origin=inward&txGid=34e521186061b3b50f7108e4ecfa6628 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000465220400005
• Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias fluxMystkowski, Arkadiusz; Kierdelewicz, A.; Kotta, Ülle; Kaparin, VadimInternational journal of control2020 / p. 2257-2266 : ill https://doi.org/10.1080/00207179.2018.1552025 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85058116191&origin=inward&txGid=1d1619fb52aa33a2a2297c90dc07da8f https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000558913100021
• Extended observer form : simple existence conditionsKaparin, Vadim; Kotta, Ülle; Mullari, TanelInternational journal of control2013 / p. 794-803 : ill https://doi.org/10.1080/00207179.2012.760048 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-84877943197&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1080%2F00207179.2012.760048%29&sessionSearchId=a6a9a3b6ef7339347899f2ad4e915514&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000318765600004
• Extended observer form with vector fieldsMullari, Tanel; Kotta, Ülle; Kaldmäe, Arvo; Kaparin, Vadim; Simha, AshutoshInternational journal of control2024 / p. 2399 - 2412 https://doi.org/10.1080/00207179.2023.2274060 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85175466038&origin=inward&txGid=9cccc30d873622b5905d797d55be6b43 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001090328500001
• Fixed-order stabilising controller design by a mixed randomised/deterministic methodNurges, Ülo; Avanessov, SergeiInternational journal of control2015 / p. 335-346 https://doi.org/10.1080/00207179.2014.953208 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-84920160802&origin=inward&txGid=8a129acdbfebb3a4c4c88b8564784af6 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000346846900010
• On the finiteness of accessibility test for nonlinear discrete-time systemsSarafrazi, Mohammad Amin; Pawluszewicz, Ewa; Bartosiewicz, Zbigniew; Kotta, ÜlleInternational journal of control2021 / p. 2330-2336 https://doi.org/10.1080/00207179.2019.1706102 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85076713926&origin=inward&txGid=363238fdc3e9bf44167a797df53cb499 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000505402500001
• Realisation of linear time-varying systemsKotta, Ülle; Tõnso, MarisInternational journal of control2017 / p. 1951-1956 https://doi.org/10.1080/00207179.2016.1230891 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-84988411854&origin=inward&txGid=51507be6a15b4d2e56246a009769204a https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:000404245200013
• Transformation of nonlinear discrete-time system into the extended observer formKaparin, Vadim; Kotta, ÜlleInternational journal of control2018 / p. 848-858 https://doi.org/10.1080/00207179.2017.1294264 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85014511185&origin=inward&txGid=4707bd7c9506006dc4c3ffbd21b20601 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000427861100008
• Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular pointsMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Sarafrazi, Mohammad Amin; Moog, Claude; Pawluszewicz, EwaInternational journal of control2020 / p. 483-489 https://doi.org/10.1080/00207179.2018.1479076 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85049910434&origin=inward&txGid=0c1239de9fad2580b083b5f126ba3065 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000525971000012