8. Phoebe Koundouri, Nikolaos Kourogenis, Nikitas Pittis, Panagiotis Samartzis, 2016. Factor models of stock returns: GARCH Errors versus Time – Varying Betas. Journal of Forecasting, doi: 10.1002/for.2387.
8. Phoebe Koundouri, Nikolaos Kourogenis, Nikitas Pittis, Panagiotis Samartzis, 2016. Factor models of stock returns: GARCH Errors versus Time – Varying Betas. Journal of Forecasting, doi: 10.1002/for.2387.