Benacerraf, P. (1973). Mathematical truth. In Benacerraf and Putnam 1983, 403-420.

Benacerraf, P., & Putnam, H., eds. (1983). Philosophy of Mathematics: Selected Readings (2nd ed.), Cambridge, England: Cambridge University Press, pp. 258-273.

Benci, V. (1995). I numeri e gli insiemi etichettati. Conferenze del seminario di matematica dell' Universita' di Bari, 261.

Benci, V., Bottazzi, E., & Di Nasso, M. (2014). Elementary numerosity and measures. Journal of Logic and Analysis, 6, 1-14 .

Benci, V., & Di Nasso, M. (2003). Numerosities of labeled sets: A new way of counting. Advances in Mathematics, 173, 50-67.

Benci, V., Di Nasso, M., & Forti, M. (2006). An Aristotelean notion of size. Annals of Pure and Applied Logic, 143, 43-53.

Benci, V., Di Nasso, M., & Forti, M. (2007). An Euclidean measure of size for mathematical universes. Logique et Analyse, 50, 43-62.

Benci, V., Horsten, L., & Wenmackers, S. (2013). Non-Archimedean probability. Milan Journal of Mathematics, 81, 121-151.

Benci, V., Horsten, L., & Wenmackers, S. (2016). Infinitesimal probabilities. British Journal for the Philosophy of Science Advance Access, 1-44. Blass, A., Di Nasso, M., & Forti, M. (2012). Quasi-selective ultrafilters and asymptotic numerosities. Advances in Mathematics, 231, 1462-1486.

Di Nasso, M. (2010). Fine asymptotic densities for sets of natural numbers. Proceedings of the American Mathematical Society, 138, 2657-2665.

Di Nasso, M., & Forti, M. (2010). Numerosities of point sets over the real line. Transactions of the American Mathematical Society, 362, 5355-5371.

Frege, G. (1980). The Foundations of Arithmetic. Transl. Austin, J.L. Evanston, IL: Northwestern University Press.

Frege, G. (2013). Basic Laws of Arithmetic, vol. 1. Oxford: Oxford University Press.

Galilei, G. (1939). Dialogues Concerning Two New Sciences. Evanston, IL: Northwestern University. Reprinted by Dover, 1954.

Gödel, K. (1944). Russell's mathematical logic. In Schilpp, P.A. (ed.), The Philosophy of Bertrand Russell, Library of Living Philosophers, vol. 5, Evanston: Northwestern University, pp. 123-153. Reprinted in Benacerraf and Putnam (1983), pp. 447-469.

Gödel, K. (1947). What is Cantor's continuum problem? American Mathematical Monthly, 54, 515-525.

Gödel, K. (1964). What is Cantor's continuum problem? (revised and expanded edition of Gödel 1947). In Benacerraf, P., & Putnam, H., Philosophy of Mathematics: Selected Readings, pp. 258-273. Reprinted in Benacerraf & Putnam 1983, pp. 470-485.

Gödel, K. (1995a). Collected Works Volume III: Unpublished Essays and Lectures. Feferman, S., Dawson, J., Goldfarb, W., Parsons, and C., Solovay, R. (eds.), Oxford: Oxford University Press.

Gödel, K. (1995b). Some basic theorems on the foundations of mathematics and their implications. In Gödel 1995a, pp. 304-323.

Gödel, K. (1995c). Is mathematics syntax of language? In Gödel 1995a, pp. 334-362.

Gödel, K. (1995d). The modern development of the foundations of mathematics in the light of philosophy. In Gödel 1995a, pp. 374-387.

Goldfarb, W. (1995). Introductory note to *1951. In Gödel 1995a, pp. 290-304.

Katz, F. M. (1981). Sets and Their Sizes. Ph.D. dissertation, MIT. <http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.233.7583&rank=1>.Mancosu, P. (2009). Measuring the size of infinite collections of natural numbers: Was Cantor's theory of infinite number inevitable? Review of Symbolic Logic, 2, 612-646.

Moore, G. H. (1990). Introductory note to Gödel 1947. In Gödel, K., Collected Works, Volume II. Oxford: Oxford University Press, pp. 154-175.

Parker, M. W. (2009). Philosophical method and Galileo's paradox of infinity. In van Kerkhove, B. (ed.), New Perspectives on Mathematical Practices. Hackensack, NJ: World Scientific, pp. 76-113.

Parker, M. W. (2012). More Trouble for Regular Probabilities. <http://philsci archive.pitt.edu/id/eprint/13063/>.

Parker, M. W. (2013). Set size and the part-whole principle. Review of Symbolic Logic, 6, 589- 612.