RT Journal Article SR Electronic T1 Expected Returns and Volatility in 135 Countries JF The Journal of Portfolio Management FD Institutional Investor Journals SP 46 OP 58 DO 10.3905/jpm.1996.409554 VO 22 IS 3 A1 Claude B. Erb A1 Campbell R. Harvey A1 Tadas E. Viskanta YR 1996 UL https://pm-research.com/content/22/3/46.abstract AB