%0 Journal Article %T Central bank purchases of sovereign bonds in the euro area, the random walk hypothesis, and different measures of risk %A Belke, Ansgar %A Gros, Daniel %A Shamsfakhr, Farzaneh %J Oxford Economic Papers %V Advance Article %P 1-1 %@ 0030-7653 %D 2021-08-01 %I Oxford University Press %~ DeepDyve