Article Cinzia Cerroni; Aldo Brigaglia (2021)
The “Circolo Matematico di Palermo” and the First World War: The crisis of scientific internationalism: a view through the unedited correspondence of De Franchis with Edmund Landau and other mathematicians. Historia Mathematica (pp. 64-94). (/isis/citation/CBB511256664/) unapi

Article Siegmund-Schultze, Reinhard (2011)
Opposition to the Boycott of German Mathematics in the Early 1920s: Letters by Edmund Landau (1877--1938) and Edwin Bidwell Wilson (1879--1964). Revue d'Histoire des Mathématiques (p. 139). (/isis/citation/CBB001034694/) unapi

Article Corry, Leo; Schappacher, Norbert (2010)
Zionist Internationalism through Number Theory: Edmund Landau at the Opening of the Hebrew University in 1925. Science in Context (p. 427). (/isis/citation/CBB001034624/) unapi

Article Carbone, Luciano; Nastasi, Pietro; Palladino, Franco (1996)
I carteggi Torelli--Cesàro, Landau--Cesàro, Cipolla--Cesàro e alcune questioni connesse. Nuncius: Annali di Storia della Scienza (pp. 151-225). (/isis/citation/CBB000070362/) unapi