@article{TE_1989_1989_1_a0,
     author = {Men\'endez, Ernesto and Ferrales, J.},
     title = {El estimador de raz\'on generalizado.},
     journal = {Trabajos de estad{\'\i}stica},
     pages = {3-11},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1989},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/TE_1989_1989_1_a0/}
}