@article{MET_1993__40_2_176472,
     author = {Erkki P. Liski and G\"otz Trenkler},
     title = {MSE-Improvement of the {Least} {Squares} {Estimator} by {Dropping} {Variables.}},
     journal = {Metrika},
     pages = {263--269},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {1993},
     zbl = {0776.62056},
     url = {http://geodesic.mathdoc.fr/item/MET_1993__40_2_176472/}
}