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1984. "Nodons in Britain and Ireland." ZCP 40 (1984): 1-22.
1987. "Time, Space, and the Otherworld." Proceedings of the Harvard Celtic Colloquium 7: 1-27.
1989-90. "Myth and Mythography in Cath Maige Tuired." Studia Celtica 24-5: 53-69.
1991. "A British Myth of Origins?" History of Religions 31: 24-38.
1994. The Irish National Origin-Legend: Synthetic Pseudohistory. Quiggin Pamphlets on the Sources of Mediaeval Gaelic History 1. Cambridge, University of Cambridge.
1994 (ed. with John T. Koch). The Celtic Heroic Age. Literary Sources for Ancient Celtic Europe and Early Ireland and Wales. Malden, Massachusetts: Celtic Studies Publications. Includes translations by John Carey.
1994. "An Edition of the Pseudo-Historical Prologue to the Senchas Már." Ériu 45: 1-32.