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\bibitem{PierreAugerCollaborationAbreu+Pastor2012} Pierre Auger Collaboration(Abreu, P. et al), \& Pastor, S. (2012). Search for Point-like Sources of Ultra-high Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos. \textit{Astrophys. J. Lett.}, \textit{755}(1), L4--7pp.

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