@Misc{BVPH2004000603, title = "El eco lusitano : revista semanal cient\'{\i}fico-literaria [Recurso electr\'{o}nico]", publisher = "[S.l. : s.n.]", editor = "s.n.]", URL = "https://prensahistorica.mcu.es/es/consulta/registro.do?id=3798", year = "1880", }