Sousa, Sónia R. and Ana Paula Serra (2008); “What Drives Idiosyncratic Volatility Over Time?“, Portuguese Economic Journal, 7(3), pp. 155-181.
Sousa, Sónia R. and Ana Paula Serra (2008); “What Drives Idiosyncratic Volatility Over Time?“, Portuguese Economic Journal, 7(3), pp. 155-181.