Out-of-step protection based on discrete angle derivativesTealane, Marko; Kilter, Jako; Bagleybter, Oleg; Heimisson, Birkir; Popov, MarjanIEEE Access2022 / p. 78290-78305 https://doi.org/10.1109/ACCESS.2022.3193390 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS