@article{QUE_1999_1999_1_a9,
     author = {Mart{\'\i}nez, V.},
     title = {Dise\~no de encuestas de opini\'on: bar\'ometro {CIS.}},
     journal = {Q\"uestii\'o},
     pages = {343-362},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1999},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/QUE_1999_1999_1_a9/}
}