1. The Parthian Arch of Augustus and Its Legacy
2. Marlowe, E. 2004: ‘That Customary Magnificence Which is Your Due’: Constantine and the Symbolic Capital of Rome, PhD thesis, Columbia University
3. Winkler, L. 1991: ‘Die Opferszenen der Trajanssäule. Bedeutung innerhalb der Narrativen Systematik’, in Baumer, Hölscher and Winkler, 267–77
4. Due bassorilievi in marmo rappresentanti scene del Foro Romano;Brizio;Jahrbuch des Deutschen Archäologischen Instituts,1872