PT  - JOURNAL ARTICLE
AU  - Peter L. Bernstein
TI  - Efficiency and Opportunity
AID  - 10.3905/jpm.1977.408619
DP  - 1977 Oct 31
TA  - The Journal of Portfolio Management
PG  - 4
VI  - 4
IP  - 1
4099  - https://pm-research.com/content/4/1/4.short
4100  - https://pm-research.com/content/4/1/4.full