%0 Journal Article %A Vijay Kumar. Chopra %A William T. Ziemba %T The Effect of Errors in Means, Variances, and Covariances on Optimal Portfolio Choice %D 1993 %R 10.3905/jpm.1993.409440 %J The Journal of Portfolio Management %P 6-11 %V 19 %N 2 %U https://jpm.pm-research.com/content/iijpormgmt/19/2/6.full.pdf