Sucarrat, Genaro; Escribano, Álvaro - Instituto de Ciencias Sociales, Instituto Madrileño de … - 2010
they guarantee the non-negativity of volatility, and because they enable richer autoregressive dynamics. However, the …-restrictive assumptions, via vector ARMA(P,Q) representations. Augmented by explanatory or exogenous regressors in the volatility …