• 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