“…. ) (Blanco et al, 2005;Zhu, 2006;Baba et al, 2007;Forte and Pena, 2009;Longstaff, 2010;Ammer and Cai, 2011;Delatte et al, 2012;Coudert and Gex, 2013;Lee et al, 2015;Srivastava et al, 2016;Fontana and Scheicher, 2016;Gilchrist and Mojon, 2016;Yu, 2017). On the other hand, other authors propose a multivariate GARCH framework (Baek and Jun, 2011;Calice and Ioannidis, 2012;Audige, 2013;Youssef and Belkacem, 2015;Buchholz and Tonzer, 2016;Tamakoshi and Hamori, 2016).…”