Mazur, Błażej; Pipień, Mateusz - In: Central European Journal of Economic Modelling and … 4 (2012) 2, pp. 95-116
We discuss the empirical importance of long term cyclical effects in the volatility of financial returns. Following Amado and Terasvirta (2009), Cizek and Spokoiny (2009) and others, we consider a general conditionally heteroscedastic process with stationarity property distorted by a...