• Gregory Currie  “Remarks on Frege's conception of inference”, in: Notre Dame Journal of Formal Logic, vol. 28, issue 1, 1987
  • Richard L. Mendelsohn  “Frege's two senses of “is””, in: Notre Dame Journal of Formal Logic, vol. 28, issue 1, 1987
  • Kevin Mulligan, Peter M. Simons and Barry Smith  “Truth-Makers”, in: Philosophy and Phenomenological Research, vol. 44, 1984
  • Helen Beebee, Julian Dodd  “Introduction”, in their edition Truthmakers: The Contemporary Debate, Oxford University Press, Mind Association Occasional Series, 2005