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\bibitem{Bennett_etal2021} Bennett, J. J., Buldgen, G., de Salas, P. F., Drewes, M., Gariazzo, S., Pastor, S., et al. (2021). Towards a precision calculation of the effective number of neutrinos N-eff in the Standard Model. Part II. Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED. \textit{J. Cosmol. Astropart. Phys.}, \textit{04}(4), 073--33pp.

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