@Book{BDG201890920267, title = "Legislaci\'{o}n del timbre del Estado.", author = "Espa\~{n}a", publisher = "Madrid : Ilustraci\'{o}n Financiera", editor = "Ilustraci\'{o}n Financiera", URL = "http://biblioteca.galiciana.gal/es/consulta/registro.do?id=470773", year = "1913", }