%0 Journal Article %A %D 2019 %J The Economics and Finance Letters %@ 2312-430X %V 6 %N 1 %P 100-109 %T Optimal Stock Portfolio Issuers of Building Construction Registered in LQ45 Based on the Markowitz Approach %M 10.18488/journal.29.2019.61.100.109 %U http://www.pakinsight.com/archive/29/03-2019/1