The
following book might be of interest :
Johannes Fried, "Donation of Constantine"
and "Constitutum Constantini". Berlin-New York: de
Gruyter, 2007. Pp. 201. ISBN 978-3-11-018539-3. $101.00.
My
review of it can be found at:
http://ccat.sas.upenn.edu/bmcr/2008/2008-02-21.html
Best,
Jan
Nelis