2007

Baumgärtner, I. (2007), Das Reich der Staufer, in Richard Lorenz, ed., 'Das Verdämmern der Macht. Vom Untergang großer Reiche' , pp. 60-81 .

1973

Rosenthal, E. (1973), 'The Invention of the Columnar Device of Emperor Charles V at the Court of Burgundy in Flanders in 1516', Journal of the Warburg and Courtauld Institutes 36 , 198-230 .

1971

Rosenthal, E. (1971), 'Plus ultra, non plus ultra, and the Columnar Device of Emperor Charles V', Journal of the Warburg and Courtauld Institutes 34 , 204-228 .