@article{PNA_2008_2008_1_a10,
     author = {Ort{\'\i}z, Jos\'e and  Rico, Luis and  Castro, Enrique},
     title = {La {Ense\~nanza} del \'algebra {Lineal} {Utilizando} {Modelizaci\'on} y {Calculadora} {Gr\'afica:} un {Estudio} con {Profesores} en {Formaci\'on.}},
     journal = {PNA},
     pages = {181-189},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2008},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/PNA_2008_2008_1_a10/}
}