DZIKEVIČIUS, Audrius. Forecasting of Voletality and Covarlances of Foreign Exchange. Ekonomika, [S. l.], v. 63, p. 182–195, 2003. DOI: 10.15388/Ekon.2003.17311. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/17311. Acesso em: 26 aug. 2025.