@book {von_tschudi1860,
	title = {Reise durch die Andes von S{\"u}d-Amerika, von Cordova nach Cobija im Jahre 1858},
	year = {1860},
	note = {von J. J. v. Tschudi},
	publisher = {Perthes},
	organization = {Perthes},
	address = {Gotha},
	url = {http://www.mdz-nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:bvb:12-bsb10358990-3},
	author = {von Tschudi, J. J.}
}
@book {418,
	title = {Viaje al desierto de Atacama hecho de orden del Gobierno de Chile en el verano de 1853-54},
	year = {1860},
	month = {1860///},
	publisher = {E. Anton},
	organization = {E. Anton},
	address = {Halle},
	url = {http://www.memoriachilena.cl/temas/documento_detalle.asp?id=MC0001417},
	author = {Philippi, R. A.}
}
