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• Intrinsic conditions for extended observer forms for nonlinear systemsSimha, Ashutosh; Respondek, Witold; Kaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle2018 IEEE Conference on Decision and Control (CDC), 17-19 Dec. 2018, 17-19 Dec. 2018 : proceedings2018 / p. 1373-1378 https://doi.org/10.1109/CDC.2018.8619122 https://www.scopus.com/sourceid/87424 https://www.scopus.com/record/display.uri?eid=2-s2.0-85062170522&origin=inward&txGid=2e5b62ae65a724ba15a4caeda8905c9f https://www.webofscience.com/wos/woscc/full-record/WOS:000458114801050
• A linear filtering framework for nonlinear systems based on extended output injectionSimha, Ashutosh; Kotta, ÜlleIFAC-PapersOnLine2019 / p. 274-279 https://doi.org/10.1016/j.ifacol.2019.11.791 https://www.scopus.com/sourceid/21100456158 https://www.scopus.com/record/display.uri?eid=2-s2.0-85077453976&origin=inward&txGid=4064756dad51e4ba3f2043f2a82c20e4 https://www.webofscience.com/wos/woscc/full-record/WOS:000503828500048