PT - JOURNAL ARTICLE AU - William F. Sharpe TI - Factor models, CAPMs,and the ABT AID - 10.3905/jpm.1984.408982 DP - 1984 Oct 31 TA - The Journal of Portfolio Management PG - 21--25 VI - 11 IP - 1 4099 - https://pm-research.com/content/11/1/21.short 4100 - https://pm-research.com/content/11/1/21.full