Beginning Functional Analysis by Kate Saxe - Springer

Applied Functional Analysis - Balakrishnan - 1981 - Springer - Very good!

Functional Analysis (Springer Classics in Mathematics) By Kösaku Yosida Paperbac

Springer Series in Statistics Ser.: Functional and Shape Data Analysis by...

Functional Data Analysis (Springer Series in Sta... by Silverman, B. W. Hardback

Elementary Functional Analysis by Shilov, Georgi E.

Elementary Functional Analysis by Georgi E. Shilov

Time Series Analysis and Its Applications: With R Examples (Springer Texts i...