Osabuohien-Irabor O. Sudden changes and volatility persistence in European capital markets: some empirical evidence. ejae [Internet]. 10. April 2023. [citirano 20. Septembar 2026.];20(1):150-66. Dostupno na: https://test.aseestant.ceon.rs/index.php/sjas/article/view/31898