@book{90125,
	author = {Gatica, Gabriel N.,},
	title = {Introducción al análisis funcional :},
	publisher = {Editorial Reverté,},
	year = {[2021]},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/103325/}
}