1. Théorie des opérations linéaires;Banach,1932
2. A note on summability factors;Bosanquet;Mathematika,1957
3. Infinite matrices and sequence spaces;Cooke,1950
4. Conservative sequence to series transformation matrices;Gerrish;Proc. Kon. Ned. Akad. van Wetensch.,1957
5. Beiträge zur absoluten Limitierung;Knopp;Archiv der Math.,1949