Ellison, M. A. (. A., McKenna-Lawlor, S. M. P., & Reid, J. H. (1961). Cosmic ray flares: A description and discussion of the ten great solar flares which have generated cosmic rays recorded at ground level. Dublin: Observatory of the School of Cosmic Physics, Dublin Institute for Advanced Studies.

Ellison, M. A. (Mervyn Archdall), Susan M. P. McKenna-Lawlor, and J. H. Reid. Cosmic Ray Flares: A Description and Discussion of the Ten Great Solar Flares Which Have Generated Cosmic Rays Recorded At Ground Level. Dublin: Observatory of the School of Cosmic Physics, Dublin Institute for Advanced Studies, 1961.