@book{93166,
	author = {García Alcázar, Ana María,},
	title = {Firma digital, certificado electrónico y factura electrónica /},
	publisher = {Ra-Ma,},
	year = {[2020]},
	series = {Ra-Ma empresa},
	address = {Paracuellos de Jarama, Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/110181/}
}