1. [1] P. Bernays. A system of axiomatic set theory : Part I. Journal of Symbolic Logic, 2(1):65-77, 1937.
2. [2] P. Bernays. A system of axiomatic set theory: Part VII. Journal of Symbolic Logic, 19(2):81-96, 1954.
3. [3] P. Bernays. Betrachtungen zum Paradoxen von Thoralf Skolem. In Avandlinger utgitt av Det Norske Videnskaps-Akademi i Oslo, pages 3-9, Oslo, 1957. Aschehoug. Reprinted in [4], pp. 113-118.
4. [4] P. Bernays. Abhandlungen zur Philosophie der Mathematik. Wiss. Buchgesellschaft, Darmstadt, 1976.
5. [5] W. Ewald and W. Sieg, editors. David Hilbert's Lectures on the Foundations of Logic and Arithmetic 1917 - 1933. Springer, 2013.