@article{PNA_2009_2009_1_a8,
     author = {Molina, Marta},
     title = {Una {Propuesta} de {Cambio} {Curricular:} {Integraci\'on} del {Pensamiento} {Algebraico} en {Educaci\'on} {Primaria.}},
     journal = {PNA},
     pages = {135-156},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {2009},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/PNA_2009_2009_1_a8/}
}