%0 Journal Article %A Leonard H. Lempert %T Just give me the Necessary Data, Please! %D 1978 %R 10.3905/jpm.1978.408651 %J The Journal of Portfolio Management %P 47-52 %V 4 %N 4 %U https://jpm.pm-research.com/content/iijpormgmt/4/4/47.full.pdf