1. A Study of obsidian exchange networks in Calabria;Ammerman;World Archaeology,1979
2. The Acconia Survey: Neolithic Settlement and obsidian trade;Ammerman,1985
3. Recenti contributi sul Neolitico della Calabria;Ammerman,1987
4. Reduction sequences and the exchange of obsidian in Neolithic Calabria;Ammerman,1982
5. Neutron activation analysis of obsidian from two Neolithic sites in Italy;Ammerman;J. Archaeol. Sci.,1990