Henricus imp or Albricus princips : a note on the supposed denaro of pope : Leo IX (1049-54) and Henry III. - Grierson, Philip, 1910-2006 (Stockholm : s.n., 1965)
In: Numismatiska Meddelanden; 30(1965), pp. 51-56
Keywords: Henry III, -- Holy Roman Emperor, -- 1017-1056.; Leo -- IX, -- Pope, -- 400-461.