@article{QUE_1993_1993_1_a17,
     author = {Ruiz Espejo, Mariano},
     title = {Nuevos estimadores de la varianza en poblaciones finitas.},
     journal = {Q\"uestii\'o},
     pages = {203-219},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1993},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/QUE_1993_1993_1_a17/}
}