De Imperatoribus Romanis (DIR) is an online peer-reviewed encyclopedia about the emperors of the Roman Empire, including the Byzantine Empire. It was established in 1996 by Michael DiMaio, and hosted at Salve Regina University. The Cambridge Companion to the Age of Constantine says it "offer sound overviews and a regularly updated bibliography". More information...

The website is placed before and after in the BestRef global ranking of the most important sources of Wikipedia.

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