Protective relaying of power systems using mathematical morphology 2026-02-15T23:28:34+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Wu, Q. H.; Ji, T. Y; Lu, Z (Power systems, 2009)