• Comments on 'A new kind of nonlinear disturbance observer for nonlinear systemswith applications to cruise control of air-breathing hypersonic vehicles'Kaldmäe, Arvo; Kotta, ÜlleInternational journal of control2020 / p. 1725 https://doi.org/10.1080/00207179.2018.1529436 https://www.scopus.com/sourceid/12342 https://www.scopus.com/record/display.uri?eid=2-s2.0-85054348932&origin=inward&txGid=0140a9a39d82b79a43dcf1042d7aa76d https://jcr.clarivate.com/jcr-jp/journal-profile?journal=INT%20J%20CONTROL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000544485300021