Jánossy, L. (1947) Cosmic Rays. Communications of the Dublin Institute for Advanced Studies. ISSN Series A (Theoretical Physics) 0070-7414
Møller, C. (1949) On the Definition of the Centre of Gravity of an Arbitrary Closed System in the Theory of Relativity. Communications of the Dublin Institute for Advanced Studies. ISSN Series A (Theoretical Physics) 0070-7414