Analysis of degree of weak efficiency in some european financial markets. The first impact of covid-19; [Análisis del grado de eficiencia débil en algunos mercados financieros europeos. Primer impacto del covid-19]

JOSE ANGEL ROLDAN CASAS2026-01-292026-01-29202110.33776/rem.v0i59.51572-s2.0-85120781135https://www.scopus.com/inward/record.uri?eid=2-s2.https://ucocris.uco.es/handle/123456789/34313Economics and EconometricsGeography, Planning and DevelopmentHistoryPolitical Science and International RelationsSocial Sciences (miscellaneous)TransportationAnalysis of degree of weak efficiency in some european financial markets. The first impact of covid-19; [Análisis del grado de eficiencia débil en algunos mercados financieros europeos. Primer impacto del covid-19]research article