%0 Journal Article %T Hidden truncation model with heteroskedasticity: S&P 500 index returns reexamined %A Belhachemi, Rachid %J Studies in Economics and Finance %V 41 %N 5 %P 1085-1105 %@ 1086-7376 %D 2024-11-14 %I Emerald Group Publishing Limited %~ DeepDyve