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11 February 2021
An Erratum to this paper has been published: https://doi.org/10.1007/s11433-021-1663-3
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Li, J., Che, ZC. & Huang, QG. Measuring the tilt of primordial gravitational-wave power spectrum from observations. Sci. China Phys. Mech. Astron. 62, 110421 (2019). https://doi.org/10.1007/s11433-019-9605-5
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DOI: https://doi.org/10.1007/s11433-019-9605-5