Note 3 — Chapter III · THE GERMAN EMPIRE AT THE HEIGHT OF ITS POWER; THE LATER SAXON AND EARLY SALIAN EMPERORS (973–1056)[2]
Reading edition
Havet’s Lettres de Gerbert (Picard’s ‘Collection de Textes’), with the editor’s introduction, are a chief authority for Gerbert’s history and policy. See also an article on Gerbert by Mr. R. Allen, in the English Historical Review, vol. vii. pp. 625-668.