@book{4553,
	author = {Heler, Mario},
	title = {Ciencia incierta},
	publisher = {Biblos},
	year = {2008},
	address = {Buenos Aires :},
	edition = {3a ed.},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L127858.jpg}
}