PT - JOURNAL ARTICLE ED - Bernstein, Peter L. TI - Sour Dough is Hardly Pumpernickel AID - 10.3905/jpm.1993.1 DP - 1993 Apr 30 TA - The Journal of Portfolio Management PG - 1--1 VI - 19 IP - 3 4099 - https://pm-research.com/content/19/3/1.short 4100 - https://pm-research.com/content/19/3/1.full