Late Roman Bronze

I have an educational page about reference works emphasizing late Roman bronze coins from the period of Diocletian and later.
http://esty.ancients.info/catalogs/...RomanAE.html
It begins with sale catalogs and continues with books. It does not list web sites. I just updated it today and solicit further suggestions.
If you collect late Roman bronze and begin to be interested in it deeply, you will want some, or all, of the major reference works. Sale catalogs show you what fine examples of rare types look like and cost (common types don't usually make it into sale catalogs). Books can tell you the history and chronology, as well as show you fine museum specimens.
If your interest is not in late Roman bronze, but some other area, you might find it listed on my "collecting themes" site:
http://esty.ancients.info/catalogs/Themes.html