References
Roymans, N. & J. Aarts, 2005, Coins, soldiers and the Batavian Hercules cult. Coin deposition in the sanctuary of Empel in the Lower Rhine region. In C. Haselgrove & D. Wigg (eds) Iron Age coinage and ritual practices, Mainz (Studien zu Fundmünzen der Antike 20), 337-359.