RT Journal Article SR Electronic T1 Asset allocation with hedged and unhedged foreign stocks and bonds JF The Journal of Portfolio Management FD Institutional Investor Journals SP 49 OP 54 DO 10.3905/jpm.1989.409221 VO 15 IS 4 A1 Philippe Jorion YR 1989 UL https://pm-research.com/content/15/4/49.abstract AB