@article{PM_1996_1996_1_a23,
     author = {Lacey, Michael T.},
     title = {Sobre funciones cuadr\'aticas bilineales de {Littlewood-Paley.}},
     journal = {Publicacions matem\`atiques},
     pages = {387-396},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1996_1996_1_a23/}
}