• Algebraic approach for analysis and control of a water tank systemBelikov, Juri; Kotta, Ülle; Tepljakov, AlekseiInformation technology and control2016 / p. 175-183 : ill https://doi.org/10.5755/j01.itc.45.2.13212 https://www.scopus.com/sourceid/19700174611 https://www.scopus.com/record/display.uri?eid=2-s2.0-84976344697&origin=inward&txGid=5ca7b9a05f9a4c7b2c3d6a23d9085528 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INF%20TECHNOL%20CONTROL&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000378875700006
• 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
• An algorithm to transform discrete-time state equations into the extended observer formKaldmäe, Arvo; Kotta, ÜlleAutomatica2024 / art. 111598 https://doi.org/10.1016/j.automatica.2024.111598 https://www.scopus.com/sourceid/24909 https://www.scopus.com/record/display.uri?eid=2-s2.0-85187529944&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1016%2Fj.automatica.2024.111598%29&sessionSearchId=0f6eff64efda8af0c0f6a2cbde07ca0c&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=AUTOMATICA&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001193945900001
• Construction of flat outputs of nonlinear discrete-time systems in a geometric and an algebraic frameworkKolar, Bernd; Kaldmäe, Arvo; Schöberl, Markus; Kotta, Ülle; Schlacher, KurtIFAC-PapersOnLine2016 / p. 796-801 https://doi.org/10.1016/j.ifacol.2016.10.263 https://www.scopus.com/sourceid/21100456158 https://www.scopus.com/record/display.uri?eid=2-s2.0-85009230360&origin=inward&txGid=7a21233c1d35351ccaffdcd85ff890f2 https://www.webofscience.com/wos/woscc/full-record/WOS:000401244000133
• Feedback linearization of possibly non-smooth systemsKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, AlexeyProceedings of the Estonian Academy of Sciences2017 / p. 109-123 https://doi.org/10.3176/proc.2017.2.01 http://www.ester.ee/record=b2355998*est https://artiklid.elnet.ee/record=b2820923*est https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85019757447&origin=inward&txGid=7a1f11ba9c80b1231084535b9727656f https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2017 https://www.webofscience.com/wos/woscc/full-record/WOS:000403737900001
• Input–output linearization of discrete-time systems by dynamic output feedbackKaldmäe, Arvo; Kotta, ÜlleEuropean journal of control2014 / p. 73-78 https://doi.org/10.1016/j.ejcon.2013.12.004 https://www.scopus.com/sourceid/25406 https://www.scopus.com/record/display.uri?eid=2-s2.0-84894658765&origin=inward&txGid=3db91738a5eadd4ded7b3b2e5cef7534 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EUR%20J%20CONTROL&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000333721100003
• Integrability for nonlinear time-delay systemsKaldmäe, Arvo; Califano, Claudia; Moog, ClaudeIEEE transactions on automatic control2016 / p. 1912-1917 https://doi.org/10.1109/TAC.2015.2482003 https://www.scopus.com/sourceid/17339 https://www.scopus.com/record/display.uri?eid=2-s2.0-84977071792&origin=inward&txGid=3b4c6faf214deb9ee4842d34a0ac586f https://jcr.clarivate.com/jcr-jp/journal-profile?journal=IEEE%20T%20AUTOMAT%20CONTR&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:000380028700017
• Minimal realizations of nonlinear time-delay systemsKaldmäe, Arvo; Zbigniew, Bartosiewicz; Kotta, Ülle; Wyrwas, MalgorzataIEEE transactions on automatic control2023 / p. 6766 - 6772 https://doi.org/10.1109/TAC.2023.3240124 https://www.scopus.com/sourceid/17339 https://www.scopus.com/record/display.uri?eid=2-s2.0-85148472342&origin=inward&txGid=a091ae8a589d5c0118a19ac230b5fe8b https://jcr.clarivate.com/jcr-jp/journal-profile?journal=IEEE%20T%20AUTOMAT%20CONTR&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001129998200024
• Observer-based residual generation for nonlinear discrete-time systemsKaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2018 / p. 325-336 https://doi.org/10.3176/proc.2018.4.01 http://www.kirj.ee/public/proceedings_pdf/2018/issue_4/proc-2018-4-325-336.pdf https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85060884643&origin=inward&txGid=e6b0b89eaf80248fab820ec277c3a295 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000450486100004
• Realization of nonlinear input-output equations in controller canonical formKaldmäe, Arvo; Kotta, ÜlleKybernetika2018 / p. 736-747 https://doi.org/10.14736/kyb-2018-4-0736 https://www.scopus.com/sourceid/24449 https://www.scopus.com/record/display.uri?eid=2-s2.0-85056195246&origin=inward&txGid=e5b53766de17abc339269f2690ebb23d https://jcr.clarivate.com/jcr-jp/journal-profile?journal=KYBERNETIKA&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000449579800006