1. Hawking, S.W.: The Chronology protection conjecture. Phys. Rev. D 46, 603–611 (1992)
2. Hawking, S.W.: Quantum coherence and closed timelike curves. Phys. Rev. D 52, 5681–5686 (1995). arXiv:gr-qc/9502017
3. Carroll, S.M., Chen, J.: Spontaneous inflation and the origin of the arrow of time. arXiv:hep-th/0410270
4. Price, H.: Cosmology, time’s arrow, and that old double standard. arXiv:gr-qc/9310022
5. Albrecht, A.: Cosmic inflation and the arrow of time. In: Barrow, J.D., et al. (ed.) Science and ultimate reality, pp. 363–401 (2002). arXiv:astro-ph/0210527