@article{GAMA_1961_1961_1_a0,
     author = {G-Rodeja, E. F.},
     title = {Derivaci\'on.},
     journal = {Gaceta matem\'atica},
     pages = {123-124},
     publisher = {mathdoc},
     volume = {13},
     number = {5-6},
     year = {1961},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1961_1961_1_a0/}
}