@article{GAMA_1974_1974_1_a15,
     author = {Le\'on \'Alvarez, Julio},
     title = {Derivadas del \'algebra de tensores.},
     journal = {Gaceta matem\'atica},
     pages = {135-142},
     publisher = {mathdoc},
     volume = {26},
     number = {5-6},
     year = {1974},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1974_1974_1_a15/}
}