@book{6845,
	author = {Drougkas, Athanasios  and European Union Agency for Cybersecurity},
	title = {NIS investments},
	publisher = {European Union Agency for Cibersecurity,},
	year = {November 2021},
	address = {[Attiki, Greece] : },
	url = {https://www.enisa.europa.eu/publications/nis-investments-2021},
}