1. W Hu, and S Dodelson, Annual Review of Astronomy and Astrophysics 40, 1 (2002) 171. 2. N Aghanim et al., “Planck 2018 results. VI. Cosmological parameters”, arXiv preprint arXiv:1807.06209 (2018). 3. P A R Ade et al., Astronomy & Astrophysics 594 (2016) A16. 4. M Cruz et al., The Astrophysical Journal 655, 1 (2007) 11. 5. J DSchwarz et al., Classical and Quantum Gravity 33, 18 (2016) 184001. 6. J A R Cembranos et al., Journal of Cosmology and Astroparticle Physics 2008, 10 (2008) 039. 7. M Cruz et al., Monthly Notices of the Royal Astronomical Society 390, 3 (2008) 913. 8. K Inoue and J Silk, The Astrophysical Journal 648, 1 (2006) 23. 9. M Cruz et al., Science 318, 5856 (2007) 1612. 10. P Vielva, Advances in Astronomy 2010 (2010) 1. 11. U Seljak, The Astrophysical Journal 482, 1 (1997) 6. 12. M Zaldarriaga and U Seljak, Physical Review D 55, 4 (1997) 1830. 13. E Newman and R Penrose, J. Math. Phys. 7, 863 (1966). 14. M J Rees, M J Rees and D W Sciama, Nature 217, (1968) 511; 217 (1968) 511. 15. K Inoue, Kaiki and J Silk, The Astrophysical Journal 664, 2 (2007) 65. 16. E Martinez-Gonzalez, J L Sanz, and J Silk, The Astrophysical Journal 355 (1990) L5. 17. S Das and D Spergel, Physical Review D 79, 4 (2009) 043007. 18. E Platen, R Weygaert, and B Jones, Monthly Notices of the Royal Astronomical Society 387, 1 (2008) 128. 19. S Shandarin et al., “Shapes and Sizes of Voids in the Lambda Cold Dark Matter Universe: Excursion Set Approach”, Monthly Notices of the Royal Astronomical Society 367, 4 (2006) 1629. 20. M Bartelmann, and P Schneider, Physics Reports 340, 4-5 (2001) 291. 21. N Goldenfeld, “Lectures on Phase Transitions and the Renormalization Group”, CRC Press (2018). 22. M Griffin, et al., Physical Review X 2.4 (2012) 041022. 23. M Sakellariadou, “Inflationary Cosmology,” Springer, Berlin, Heidelberg (2008) 359. 24. N Turok, Physical Review Letters 63, 24 (1989) 2625. 25. N Turok, and D Spergel, Physical Review Letters 64, 23 (1990) 2736. 26. R Durrer et al., Nuclear Physics B 368, 2 (1992) 527.
)