PT - JOURNAL ARTICLE AU - George M. Frankfurter AU - Herbert E. Phillips TI - Alpha-Beta Theory AID - 10.3905/jpm.1977.408607 DP - 1977 Jul 31 TA - The Journal of Portfolio Management PG - 35--40 VI - 3 IP - 4 4099 - https://pm-research.com/content/3/4/35.short 4100 - https://pm-research.com/content/3/4/35.full