1. B. P. Abbott, et al. (LIGO Scientific Collaboration, and Virgo Collaboration), Phys. Rev. Lett. 116, 061102 (2016), arXiv: 1602.03837.
2. B. P. Abbott, et al. (LIGO Scientific Collaboration, and Virgo Collaboration), Phys. Rev. X 9, 031040 (2019), arXiv: 1811.12907.
3. R. Abbott, et al. (LIGO Scientific Collaboration, and Virgo Collaboration), Phys. Rev. X 11, 021053 (2021), arXiv: 2010.14527.
4. R. Abbott, et al. (LIGO Scientific Collaboration, Virgo Collaboration, and KAGRA Collaboration), Phys. Rev. X 13, 041039 (2023), arXiv: 2111.03606.
5. M. V. Sazhin, Soviet Ast. 22, 36 (1978).