Accessibility and system reduction of nonlinear time-delay control systemsBartosiewicz, Zbigniew; Kaldmäe, Arvo; Kawano, Yu; Kotta, Ülle; Pawluszewicz, Ewa; Simha, Ashutosh; Wyrwas, MałgorzataIEEE Transactions on Automatic Control2021 / p. 3781−3788 https://doi.org/10.1109/TAC.2020.3028566 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Adjoint polynomial formulas for nonlinear state-space realizationBelikov, Juri; Kotta, Ülle; Tõnso, MarisIEEE transactions on automatic control2014 / p. 256-261

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

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

Minimal realizations of nonlinear time-delay systemsKaldmäe, Arvo; Zbigniew, Bartosiewicz; Kotta, Ülle; Wyrwas, MalgorzataIEEE transactions on automatic control2023 / 7 p https://doi.org/10.1109/TAC.2023.3240124

New stability conditions via reflection coefficients of polynomialsNurges, ÜloIEEE transactions on automatic control2006 / 9, p. 1354-1360 : ill https://ieeexplore.ieee.org/document/1506942

On integrability of observable space for discrete-time polynomial control systemsKawano, Yu; Kotta, ÜlleIEEE transactions on automatic control2015 / p. 1987-1991 http://dx.doi.org/10.1109/TAC.2014.2365685

On the stopping criteria in nonlinear unknown input observability conditionSarafrazi, Mohammad Amin; Kotta, Ülle; Bartosiewicz, ZbigniewIEEE transactions on automatic control2022 / p. 4733-4737 https://doi.org/10.1109/TAC.2022.3160133 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

A test for the generic strong-accessibility of meromorphic nonlinear systemsCarravetta, Francesco; Sarafrazi, Mohammad Amin; Bartosiewicz, Zbigniew; Kotta, ÜlleIEEE transactions on automatic control2020 / p. 867-873 https://doi.org/10.1109/TAC.2019.2921645 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS