PT - JOURNAL ARTICLE AU - Edwin D. Etherington TI - Wall Street AID - 10.3905/jpm.1976.408587 DP - 1976 Oct 31 TA - The Journal of Portfolio Management PG - 5--10 VI - 3 IP - 1 4099 - https://pm-research.com/content/3/1/5.short 4100 - https://pm-research.com/content/3/1/5.full