Funktionalanalysis und Numerische Mathematik | SpringerLink
Funktionalanalysis und Numerische Mathematik | SpringerLink,Introduction to Numerical Analysis (Texts in Applied Mathematics),Functional Analysis I: Linear Functional Analysis | SpringerLink,Zeta and $L$-functions in Number Theory and Combinatorics,Numerical mathematics : Hammerlin, G. (Günther), 1928- : Free Download, Borrow, and Streaming : Internet Archive