PT - JOURNAL ARTICLE AU - Thomas M. Tole TI - You can't diversify without diversifying AID - 10.3905/jpm.1982.408842 DP - 1982 Jan 31 TA - The Journal of Portfolio Management PG - 5--11 VI - 8 IP - 2 4099 - https://pm-research.com/content/8/2/5.short 4100 - https://pm-research.com/content/8/2/5.full