Cambridge University Press
Stevenson (Jane): Ascent through the heavens, from Egypt to Ireland.
In CMCS 5 (Summer, 1983), pp. 21–35.
The apocryphon of seven heavens described in Latin, Old English and Irish texts (incl. Fís Adamnáin) is traced back to fourth-century Egypt.

Nees (Lawrence): The colophon drawing in the Book of Mulling: a supposed Irish monastery plan and the tradition of terminal illustration in early Medieval manuscripts.
In CMCS 5 (Summer, 1983), pp. 67–91.
Suggests that the colophon drawing in MS TCD 60 (reproduction included) derives from Carolingian manuscript illumination rather than a plan of an Irish monastery. Incl. plts.