1. Adamo, T.: Lectures on twistor theory. http://arxiv.org/abs/1712.02196 (2018)
2. Alexander, S., Cunningham, W.J., Lanier, J., Smolin, L. Stanojevic, S., Toomey, M.W., Wecker, D.: The autodidactic universe. arXiv preprint http://arxiv.org/abs/2104.03902 (2021)
3. Barbour, J., Smolin, L.: Extremal variety as the foundation of a cosmological quantum theory. http://arxiv.org/abs/hep-th/9203041 (1992)
4. Barbour, J.: Shape dynamics. An introduction. In: Quantum Field Theory and Gravity: Conceptual and Mathematical Advances in the Search for a Unified Framework, pp. 257–297. Springer (2012). http://arxiv.org/abs/arXiv:1105.0183
5. Barbour, J.: The End of Time: The Next Revolution in Physics. Oxford University Press, New York (2000)