Circulation of coins during the Roman period in the northwestern part of Gallia-Belgica. The civitates of Nervians and Menapians (c.50-B.C. to 450-A.D.)
R. Delmaire, Circulation of coins during the Roman period in the northwestern part of Gallia-Belgica. The civitates of Nervians and Menapians (c.50-B.C. to 450-A.D.), REV NORD, 81(333), 1999, pp. 230-230