Fearnsides, William G.; Elles, Gertrude L.; Smith, Bernard (1906). "The Lower Palæozoic Rocks of Pomeroy". Proceedings of the Royal Irish Academy. Section B: Biological, Geological, and Chemical Science. 26: 97–128 – via JSTOR.
Tyrrell, G. W. (1920). "GEOLOGY". Science Progress in the Twentieth Century (1919-1933). 15 (57): 24–29 – via JSTOR.