Ulster Journal of Archaeology 70 (2011)
The Ulster Archaeological Society
Hunter (Robert J.), McHugh (Ronan), Scott (Brian G.): The use of cannon against Enagh Castle, County Londonderry.
In UJA 70 (2011), pp. 83–110.
Includes a comment on AFM s.a. 1555, explaining the meaning of the Irish term an gonna cam.

Addendum in UJA 71 (2012), p. 87.