@article{SORT_2009_2009_1_a1,
     author = {Ugarte, M.D. and  Goicoa, T. and  Militino, A.F. and   Sagaseta-L\'opez, M.},
     title = {Estimating unemployment in very small areas.},
     journal = {Sort},
     pages = {49-70},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SORT_2009_2009_1_a1/}
}