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 Conference Proceedings at Scopus Article at Scopus Article at WOS