RT Journal Article SR Electronic T1 Diversification and time JF The Journal of Portfolio Management FD Institutional Investor Journals SP 21 OP 26 DO 10.3905/jpm.1990.409265 VO 16 IS 3 A1 Lee, Wayne Y. YR 1990 UL http://jpm.pm-research.com/content/16/3/21.abstract AB