Yoshida, Kōsaku, 1909- Functional analysis / Ks̥aku Yosida. - 6th ed. - New York : Springer-Verlag, 1980. - xii, 500 p. ; 24 cm. - Grundlehren der mathematischen Wissenschaften ; 123 . Includes index. All. ISBN: 0387102108 Subjects--Topical Terms: Functional analysis. Dewey Class. No.: 515.7