PT - JOURNAL ARTICLE AU - Robert A. Olsen TI - Sample size and Markowitz diversification AID - 10.3905/jpm.1983.408935 DP - 1983 Oct 31 TA - The Journal of Portfolio Management PG - 18--22 VI - 10 IP - 1 4099 - https://pm-research.com/content/10/1/18.short 4100 - https://pm-research.com/content/10/1/18.full