Beta Stability Over Bull and Bear Market on the Warsaw Stock Exchange
Wiesław Dębski, Ewa Feder-Sempach, Bartosz Świderski
Beta Coefficients of Polish Blue Chip Companies in the Period Of 2005–2011
Wiesław Dębski, Ewa Feder-Sempach
Intervalling Effect On Estimating The Beta Parameter For The Largest Companies On The WSE
Wiesław Dębski, Ewa Feder-Sempach, Bartosz Świderski