@article{GAMA_1972_1972_1_a0,
     author = {Burillo, Pedro Jes\'us},
     title = {Nota sobre transformaciones en torno al origen en el plano polar.},
     journal = {Gaceta matem\'atica},
     pages = {3-11},
     publisher = {mathdoc},
     volume = {24},
     number = {1-2},
     year = {1972},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1972_1972_1_a0/}
}