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\bibitem{Castorina_etal2012} Castorina, E., Franca, U., Lattanzi, M., Lesgourgues, J., Mangano, G., Melchiorri, A., et al. (2012). Cosmological lepton asymmetry with a nonzero mixing angle theta(13). \textit{Phys. Rev. D}, \textit{86}(2), 023517--11pp.

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