@article{RACSAM_2009_2009_1_a21,
     author = {Balb\'as, Alejandro and  Jim\'enez-Guerra, Pedro},
     title = {Martingales and arbitrage: a new look.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales. Matem\'aticas},
     publisher = {mathdoc},
     volume = {103},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RACSAM_2009_2009_1_a21/}
}