@article{PM_1991_1991_1_a13,
     author = {Wainger, Stephen},
     title = {Dilataciones asociadas a curvas planas.},
     journal = {Publicacions matem\`atiques},
     pages = {251-257},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1991_1991_1_a13/}
}