@Book{ARA20120001527, title = "Plano de Zaragoza", author = "Casa\~{n}al y Zapatero, Dionisio", publisher = "Zaragoza : [s.n.]", editor = "[s.n.]", URL = "https://bibliotecavirtual.aragon.es/es/consulta/registro.do?id=3763", year = "1887", }