A brief tutorial overview of disturbance observers for nonlinear systems : application to flatness-based controlKaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2020 / p. 57-73 : ill https://doi.org/10.3176/proc.2020.1.07 http://www.kirj.ee/33035/?tpl=1061&c_tpl=1064 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS