@book{998,
	author = {Munier, Nolberto J.},
	title = {PERT-CPM y técnicas relacionadas},
	publisher = {Astrea},
	year = {1981},
	address = {Buenos Aires :},
	edition = {5a.ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/PERT-CPM.jpg}
}