@book{29493,
	author = {Donner, Johan,},
	title = {Fundamental astronomy},
	publisher = {Springer,,,},
	year = {[2016]},
	address = {Heidelberg : : :},
	edition = {Sexta edición.},
	url = {https://unicurn.sharepoint.com/:b:/s/biblioteca/Eaz7ss6XD2RHky9kDKWUcA4BSUOXE61nFXW2DdbPhUnZHQ?e=KuWaIw}
}