PT - JOURNAL ARTICLE AU - James H. Lorie TI - Diversification AID - 10.3905/jpm.1975.408514 DP - 1975 Jan 31 TA - The Journal of Portfolio Management PG - 25--28 VI - 1 IP - 2 4099 - https://pm-research.com/content/1/2/25.short 4100 - https://pm-research.com/content/1/2/25.full