@article{PM_1998_1998_1_a13,
     author = {Ortega-Cerd\`a, Joaquim},
     title = {Medidas de muestreo.},
     journal = {Publicacions matem\`atiques},
     pages = {559-566},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1998_1998_1_a13/}
}