- Adjoint polynomial formulas for nonlinear state-space realizationBelikov, Juri; Kotta, Ülle; Tõnso, MarisIEEE transactions on automatic control2014 / p. 256-261 https://doi.org/10.1109/TAC.2013.2270868 https://www.scopus.com/sourceid/17339 https://www.scopus.com/record/display.uri?eid=2-s2.0-84891599092&origin=inward&txGid=2fed25b583e3aabca53013d5fc88d1f7 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=IEEE%20T%20AUTOMAT%20CONTR&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000330760400027
- 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
- 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
- Forward and backward shifts of vector fields : towards the dual algebraic frameworkMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Pawluszewicz, Ewa; Moog, ClaudeIEEE transactions on automatic control2017 / p. 3029-3033 https://doi.org/10.1109/TAC.2016.2608718 https://www.scopus.com/sourceid/17339 https://www.scopus.com/record/display.uri?eid=2-s2.0-85028357881&origin=inward&txGid=0397bf2555a5c74183cf5ad65dc1c355 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=IEEE%20T%20AUTOMAT%20CONTR&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:000402733600039
- Further results on identifiability of discrete-time nonlinear systemsNõmm, Sven; Moog, ClaudeAutomatica2016 / p. 69-74 : ill https://doi.org/10.1016/j.automatica.2016.01.054 https://www.scopus.com/sourceid/24909 https://www.scopus.com/record/display.uri?eid=2-s2.0-84958824648&origin=inward&txGid=f0e98110e37ad3ab4dee8d4019d7c4e2 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=AUTOMATICA&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000375507600008
- Linearization by input-output injections on homogeneous time scalesCiulkin, Monika; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2014 / p. 387-397 https://artiklid.elnet.ee/record=b2707375*est https://doi.org/10.3176/proc.2014.4.04 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-84911009192&origin=inward&txGid=375347fb06f5fbc2d8a990151874050d https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000346144800004
- Observable space of the nonlinear control system on a homogeneous time scaleKaparin, Vadim; Kotta, Ülle; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2014 / p. 11-25 https://artiklid.elnet.ee/record=b2665198*est https://doi.org/10.3176/proc.2014.1.04 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-84896043660&origin=inward&txGid=3d130014b0adc423948ad68f94108ce7 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000333322100004
- 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
- On the properties of forward and backward shifts of vector fieldsKaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle; Mullari, Tanel; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2022 / p. 314-325 https://doi.org/10.3176/proc.2022.4.02 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85144227254&origin=inward&txGid=0a25d396b3d8b83e0d0b9a70df64547d https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000901995900002
- Relaxing realizability conditions for discrete-time nonlinear systemsKotta, Ülle; Schlahter, Kurt; Tõnso, MarisAutomatica2015 / p. 67-71 https://doi.org/10.1016/j.automatica.2015.05.007 https://www.scopus.com/sourceid/24909 https://www.scopus.com/record/display.uri?eid=2-s2.0-84931368820&origin=inward&txGid=82b77ed4eb1cb7b54aec26ca4b0bf146 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=AUTOMATICA&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000357226400011
- Transfer matrix and its Jacobson form for nonlinear systems on time scales : mathematica implementationBelikov, Juri; Kotta, Ülle; Leibak, AlarFull Papers : 18th International Conference on Process Control '11 : June 14-17, 2011, Tatransk Lomnica, Slovakia2011 / p. 141-146
- Transformation of nonlinear discrete-time state equations into the observer form : extension to non-reversible caseMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2021 / p. 235-247 https://doi.org/10.3176/proc.2021.3.03 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85114734072&origin=inward&txGid=05c9a86493161e8331c65a5a78e608d0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000700776400003
- Transformation of nonlinear discrete-time state equations into the observer form : revisionMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2023 / p. 1-5 https://doi.org/10.3176/proc.2023.1.01 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85150172657&origin=inward&txGid=bf36877461907a106df5ef0cbf6be40c https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001035539800001
- 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
- Transformation of nonlinear MIMO discrete-time systems into the extended observer formKaparin, Vadim; Kotta, ÜlleAsian journal of control2019 / p. 2208–2217 : ill https://doi.org/10.1002/asjc.1824 https://www.scopus.com/sourceid/12221 https://www.scopus.com/record/display.uri?eid=2-s2.0-85060859959&origin=inward&txGid=9eabd2a8165d8d95665e1dd9229249ad https://jcr.clarivate.com/jcr-jp/journal-profile?journal=ASIAN%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000489135400003
- Transformation of nonlinear state equations into the observer form : necessary and sufficient conditions in terms of one-formsKaparin, Vadim; Kotta, ÜlleKybernetika2015 / p. 36-58 https://doi.org/10.14736/kyb-2015-1-0036 https://www.scopus.com/sourceid/24449 https://www.scopus.com/record/display.uri?eid=2-s2.0-84926658904&origin=inward&txGid=b335159601260ab38d2ae0efd6078821 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=KYBERNETIKA&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000353666700004