Arithmetical notes, IX. On the set of integers representable as a product of a prime and square E. Cohen — 1962 Acta Arithmetica
A New Class of Polynomials Relevant to Electron Collision Problems. Moses E. Cohen Mathematische Zeitschrift
Correction to the paper "On the distribution of the k-free integers in residue classes" E. Cohen; Richard Robinson — 1970 Acta Arithmetica
Errata to the paper "On the distribution of the k-free integers in residue classes" E. Cohen; Richard Robinson — 1965 Acta Arithmetica
On the distribution of the k-free integers in residue classes E. Cohen; Richard Robinson — 1963 Acta Arithmetica
The arithmetic-geometric mean and its generalizations for noncommuting linear operators Roger D. Nussbaum; Joel E. Cohen — 1988 Annali della Scuola Normale Superiore di Pisa - Classe di Scienze