@article{PM_1999_1999_1_a4,
     author = {Farag, Hany M.},
     title = {Los n\'ucleos de {Riesz} no dan lugar a an\'alogos de la curvatura de {Menger-Melnikov} de dimensiones mayores.},
     journal = {Publicacions matem\`atiques},
     pages = {251-260},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1999_1999_1_a4/}
}