G. Verhoeven

Vermeulen, F., S Hay and G. Verhoeven (2006). ‘Potentia: an integrated survey of a Roman colony on the Adriatic coast’. PBSR 74: 203–236.
Vermeulen, F. and G. Verhoeven (2004). ‘The contribution of aerial photography and field survey to the study of urbanization in the Potenza valley (Picenum)’. JRA 17: 57–82.