International Conference on Insular Art (4th, 1998, Cardiff); Pattern and purpose in insular art : proceedings of the Fourth International Conference on Insular Art held at the National Museum & Gallery, Cardiff 3-6 September 1998; Oxford; Oxbow Books ;
Describes how Ogham script inscribed on stones decorated only with incised crosses can be used to date such monuments, and speculates about how such a dating technique might be applied to monuments lacking any inscriptions. Describes the various types of cross forms found on these stones. Briefly notes what a chronology of these stones can reveal about the early history of Christianity and ecclesiastical contacts in Ireland. ;