In my search on information on the terminology/dating of Late Antiquity I stumbled over the German online periodical plekos:
plekos
Periodicum OnLine zur Erforschung
der KOmmunikationsstrukturen in der Spätantike
(Online Periodical for the Research of
Communications Structures in Late Antiquity)
For full articles through 2006, you have to click on the HTML links, beginning 2007, everything is in PDF format.