@book{4453,
	author = {Unión Internacional de Telecomunicaciones},
	title = {Quality of service regulation manual},
	publisher = {ITU},
	year = {2017},
	url = {https://www.itu.int/dms_pub/itu-d/opb/pref/D-PREF-BB.QOS_REG01-2017-PDF-E.pdf},
}