PT - JOURNAL ARTICLE AU - Leonard H. Lempert TI - Just give me the Necessary Data, Please! AID - 10.3905/jpm.1978.408651 DP - 1978 Jul 31 TA - The Journal of Portfolio Management PG - 47--52 VI - 4 IP - 4 4099 - https://pm-research.com/content/4/4/47.short 4100 - https://pm-research.com/content/4/4/47.full