@article{GAMA_1981_1981_1_a0,
     author = {Babini, J.},
     title = {Sobre un problema de {Leonardo} {Pisano.}},
     journal = {Gaceta matem\'atica},
     pages = {11-12},
     publisher = {mathdoc},
     volume = {33},
     number = {1-2},
     year = {1981},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1981_1981_1_a0/}
}