[b] H. Gerdes, op. cit.
[c] Friedrich Wilhelm Benjamin von Giesebrecht, op. cit.
[d] W. Menzel, op. cit.
[e] L. von Ranke, op. cit.
[f] James Sime, article on “Germany” in the Ninth Edition of the Encyclopædia Britannica.
[g] R. Comyn, op. cit.
[h] Henry Hallam, The View of the State of Europe during the Middle Ages.
Chapter IX. The Franconian, or Salian, Dynasty
[b] Thietmar of Merseburg, Chronicon.
[c] Wipo, Gesta Chuonradi II imperatoris.