@article{PNA_2007_2007_1_a7,
     author = {Maz, Alexander and  Rico, Luis},
     title = {Situaciones {Asociadas} a los {N\'umeros} {Negativos} en {Textos} de {Matem\'aticas} {Espa\~noles} de los {Siglos} {XVIII} y {XIX.}},
     journal = {PNA},
     pages = {113-123},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {2007},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/PNA_2007_2007_1_a7/}
}