Shulman, Michael (2018). "Comparing material and structural set theories". Annals of Pure and Applied Logic. 170 (4): 465–504. arXiv:1808.05204. doi:10.1016/j.apal.2018.11.002.
Shulman, Michael (2018). "Comparing material and structural set theories". Annals of Pure and Applied Logic. 170 (4): 465–504. arXiv:1808.05204. doi:10.1016/j.apal.2018.11.002.