1. Andréka, H., Madaraśz, J., & Németi, I. (2002). On the logical structure of relativity theory. Manuscript.
2. Andréka, H., Madarász, J. X., & Németi, I. (2005). Mutual definability does not imply definitional equivalence, a simple example. Mathematical Logic Quarterly, 10.1002/malq.200410051.
3. Baez, J., Bartel, T., & Dolan, J. (2004). Property, structure, and stuff. Available at: 〈http://math.ucr.edu/home/baez/qg-spring2004/discussion.html〉.
4. Einstein algebras and the hole argument;Bain;Philosophy of Science,2003
5. Barrett, T. (2013). How to count structure. Manuscript.