Chapel Hill: University of North Carolina Press, 1978. — 175 p. — (North Carolina Studies in the Romance Languages and Literatures 203).
Barbarino's orthographic study is a quantitative and comparative analysis of the alternation of B and V in Latin inscriptions. His data is drawn from approximately 4,800 epitaphs that include Latin inscriptions from Roman provinces in Britain, the Balkans, North Africa, Dalmatia, Spain, Gaul, and Italy.