1. b.ballin smith, 1998 : Crantit, Orkney, GUARD Report 619, Glasgow University (Unpublished Data Structure Report).
2. b.ballin smith, 1998 : Crantit 1998: Phase 2 Excavation and Fieldwork, GUARD Report 619.2, Glasgow University (Unpublished Data Structure Report).
3. b.ballin smith, 1998 : Crantit 1998: Phase 3: Project Design for Post-Excavation Work and Publication, GUARD Report 619.3, Glasgow University (Unpublished Data Structure Report).