PT - JOURNAL ARTICLE AU - Robert C. Jones TI - Group rotation from the bottom up AID - 10.3905/jpm.1989.409220 DP - 1989 Jul 31 TA - The Journal of Portfolio Management PG - 32--38 VI - 15 IP - 4 4099 - https://pm-research.com/content/15/4/32.short 4100 - https://pm-research.com/content/15/4/32.full