1. Hooper, D., Phys. Dark Universe, 2012, vol. 1, p. 1.
2. Carroll, S., The Particle at the End of the Universe, New York: Dutton, 2012.
3. Suh, P.K., Int. J. Adv. Res. Phys. Sci., 2018, vol. 5, p. 19.
4. Punturo, M., Europhys. News, 2013, vol. 44, no. 2, p. 17.
5. Abbott, B.P., et al., Phys. Rev. Lett., 2016, vol. 116, p. 16.