@book{20117,
	author = {Nair, M. Thamban Nair},
	title = {Functional Analysis},
	publisher = {Prentice Hall },
	year = {2004},
	address = {New Delhi},
	url = {https://libgen.is/book/index.php?md5=23663EA2B67C706CF6E4FCBA11E56CCE}
}