• 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 https://www.scopus.com/sourceid/21100256977 https://www.scopus.com/record/display.uri?eid=2-s2.0-84964505032&origin=inward&txGid=b19f65c78d1560ca94ddea9a3d64ff20 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=MATH%20CONTROL%20RELAT%20F&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000380129600002
  • Polynomial accessibility condition for the multi-input multi-output nonlinear control systemKotta, Ülle; Tõnso, Maris; Kawano, YuProceedings of the Estonian Academy of Sciences2014 / p. 136-150 https://artiklid.elnet.ee/record=b2673962*est https://doi.org/10.3176/proc.2014.2.04 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-84901276730&origin=inward&txGid=6b14f0e2cde49b413823488d7b602839 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000337664000004