@Book{DGA20070158449, title = "Joaqu\'{\i}n Costa y los principios Standum est Chartae y Standum est Consuetudini.", author = "VALLET DE GOYTISOLO, Juan", publisher = "[s. l.] : Fundaci\'{o}n Matritense del Notario.", editor = "Fundaci\'{o}n Matritense del Notario.", URL = "https://derechoaragones.aragon.es/es/consulta/registro.do?id=600804", year = "1990", }