2
Published 1982
Springer Berlin Heidelberg

4
by Hurwitz, Adolf
Published 1964
Springer Berlin Heidelberg

6
by Courant, Richard, Robbins, Herbert
Published 1962
Springer Berlin Heidelberg

7
by Courant, Richard, Robbins, Herbert
Published 1992
Springer Berlin Heidelberg

10
by Courant, Richard, Hilbert, David
Published 1924
Springer Berlin Heidelberg

12
by Courant, Richard
Published 1955
Springer Berlin Heidelberg

14
by Courant, Richard, Robbins, Herbert
Published 1967
Springer Berlin Heidelberg

18
by Klein, Felix
Published 1926
Springer Berlin Heidelberg

19
by Courant, Richard, John, Fritz
Published 2000
Springer Berlin Heidelberg

20
by Courant, Richard, Hilbert, David
Published 1993
Springer Berlin Heidelberg