Samson A. Adeleke

Adeleke, Samson A., Dummett, Michael A. E. and Neumann, Peter M. 1987. “On the Question of Frege’s about Right-Ordered Groups.” Bulletin of the London Mathematical Society 19: 513–521. Reprinted in revised form in Dummett (1991, 53–64).

Neumann, Peter M., Adeleke, Samson A. and Dummett, Michael A. E. 1987. “On a Question of Frege’s about Right-ordered Groups.” Bulletin of the London Mathematical Society 19: 513–521. Reprinted, with a postscript, in Demopoulos (1995, 405–421).

Demopoulos, William, ed. 1995. Frege’s Philosophy of Mathematics. Cambridge, Massachusetts: Harvard University Press.

Dummett, Michael A. E. 1991. Frege and Other Philosophers. Oxford: Oxford University Press, doi:10.1093/019823628X.001.0001.