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

Accessibility conditions of MIMO nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematical control and related fields2016 / p. 217-250 https://doi.org/10.3934/mcrf.2016002 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Algebraic formalism of differential one-forms for nonlinear control systems on time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences. Physics. Mathematics2007 / 3, p. 264-282

Algebraic formalism of differential p-forms and vector fields for nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2013 / p. 215-226 https://doi.org/10.3176/proc.2013.4.02 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Dynamic output feedback linearization based adaptive control of nonlinear MIMO systemsPetlenkov, Eduard; Belikov, Juri; Nõmm, Sven; Wyrwas, MałgorzataThe American Control Conference (ACC2008) : Seattle, Washington, USA, June 11-13, 20082008 / p. 3446-3451 https://ieeexplore.ieee.org/document/4587026

Nabla derivatives associated with nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Pawluszewicz, Ewa; Wyrwas, MałgorzataNonlinear analysis : modelling and control2016 / p. 547-563 https://doi.org/10.15388/NA.2016.4.8 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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 Journal metrics at Scopus Article at Scopus Journal metrics at Scopus Article at WOS

On accessibility conditions for state space nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Wyrwas, MałgorzataSystems & control letters2016 / p. 8-13 https://doi.org/10.1016/j.sysconle.2016.09.018 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On submersivity assumption for nonlinear control systems on homogeneous time scalesKotta, Ülle; Rehák, Branislav; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2011 / 1, 25-37

On the transformation of a nonlinear discrete-time input-output system into the strong row-reduced formBartosiewicz, Zbigniew; Belikov, Juri; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2016 / p. 220-236 https://doi.org/10.3176/proc.2016.3.02 https://artiklid.elnet.ee/record=b2798394*est Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Popov form and the explicit equations of inverse systemsBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2018 / p. 432-355 : ill http://www.kirj.ee/public/proceedings_pdf/2018/issue_4/proc-2018-4-342-355.pdf https://doi.org/10.3176/proc.2018.4.04 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Reducibility condition for nonlinear discrete-time systems : behavioral approachBartosiewicz, Zbigniew; Kotta, Ülle; Pawłuszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataControl and Cybernetics2013 / p. 329-346 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=d858f3fd9c2acd98e41f35a0bed4c0cb9efab59c Journal metrics at Scopus Article at Scopus

State feedback linearization of nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Belikov, Juri; Kotta, Ülle; Wyrwas, MałgorzataNonlinear analysis: hybrid systems2019 / p. 69-85 https://doi.org/10.1016/j.nahs.2018.08.002 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Static state feedback linearization of nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematics of control, signals, and systems2015 / p. 523-550 https://doi.org/10.1007/s00498-015-0150-5 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

The strong Popov form of nonlinear input–output equationsBartosiewicz, Zbigniew; Pawluszewicz, Ewa; Wyrwas, Małgorzata; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 193–206 https://doi.org/10.3176/proc.2018.3.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS