PT - JOURNAL ARTICLE AU - Charles A. Akemann AU - Werner E. Keller TI - Relative Strength does Persist! AID - 10.3905/jpm.1977.408622 DP - 1977 Oct 31 TA - The Journal of Portfolio Management PG - 38--45 VI - 4 IP - 1 4099 - https://pm-research.com/content/4/1/38.short 4100 - https://pm-research.com/content/4/1/38.full