@article{QUE_1994_1994_1_a13,
     author = {Mart{\'\i}nez Arn\'aiz, J. Alberto},
     title = {Regresi\'on ortogonal y componentes principales.},
     journal = {Q\"uestii\'o},
     pages = {285-296},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1994},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/QUE_1994_1994_1_a13/}
}