Buckley, Stephen M. and MacHale, D. (2013) Variations on a Theme: Rings Satisfying x³ = x Are Commutative. American Mathematical Monthly, 120 (5). pp. 430-440. ISSN 0002-9890
Buckley, Stephen M. and MacHale, D. (2012) Centrifiers and ring commutativity. Journal of Mathematical Sciences: Advances and Applications, 15. pp. 139-161. ISSN 0974-5750