@book{93203,
	author = {Nespral, Dioni, and Beltrán, Marta,},
	title = {Blockchain :},
	publisher = {Ra-Ma,},
	year = {[2021]},
	series = {Ciberseguridad},
	address = {Paracuellos de Jarama, Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/110223/}
}