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\bibitem{Figueroa_etal2020} Figueroa, D. G., Hindmarsh, M., Lizarraga, J., \& Urrestilla, J. (2020). Irreducible background of gravitational waves from a cosmic defect network: Update and comparison of numerical techniques. \textit{Phys. Rev. D}, \textit{102}(10), 103516--25pp.

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