@book{6060,
	author = {Berezansky, Yu. M. and Sheftel, Z. G.},
	title = {Functional analysis. Vol. 2 /},
	publisher = {Institute of Math. NAS of Ukraine,},
	year = {2010.},
	series = {(National Academy of Sciences of Ukraine. Institute of Mathematics)},
	address = {Kyiv : :},
	edition = {3rd ed.}
}