Sakowski, Paweł; Ślepaczuk, Robert; Wywiał, Mateusz - In: E-Finanse : finansowy kwartalnik internetowy 12 (2016) 2, pp. 23-35
. Proposed extensions include a volatility regime switching mechanism (using dummy variables and the Markov approach) and the … fifth risk factor based on realized volatility of index returns. Moreover, instead of using data for stocks of a particular …