PT - JOURNAL ARTICLE ED - Bernstein, Peter L. TI - Of Keynes, Copernicus, Markowitz, and Harvard AID - 10.3905/jpm.1990.1 DP - 1990 Apr 30 TA - The Journal of Portfolio Management PG - 1--1 VI - 16 IP - 3 4099 - https://pm-research.com/content/16/3/1.short 4100 - https://pm-research.com/content/16/3/1.full