PT - JOURNAL ARTICLE AU - Joseph A Lavely AU - Gordon Wakefield AU - Bob Barrett TI - Toward enhancing beta estimates AID - 10.3905/jpm.1980.408768 DP - 1980 Jul 31 TA - The Journal of Portfolio Management PG - 43--46 VI - 6 IP - 4 4099 - https://pm-research.com/content/6/4/43.short 4100 - https://pm-research.com/content/6/4/43.full