• 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