%0 Journal Article %A Kubáček, Lubomír %T Two stage linear model with constraints %J Mathematica slovaca %D 1993 %P 643-658 %V 43 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1993__43_5_a7/ %G en %F MASLO_1993__43_5_a7