@book{729,
	author = {Galilei, Galileo and Kepler, Johannes},
	title = {La gaceta sideral Conversación con el mensajero sideral},
	publisher = {Alianza Editorial},
	year = {2007},
	address = {Madrid, España},
	url = {https://biblioteca.esfmthea.edu.bo/cgi-bin/koha/opac-retrieve-file.pl?id=821b0b28348fa52d18c1149e33f89c57}
}