- ... collaboration
- Authorlist at the end, after the references.
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- ... 2006)
- The Tibet, Super-Kamiokande,
and MILAGRO collaborations have recently performed two-dimensional
measurements for primary energies above a few TeV (Amenomori et al. 2006; Guillian et al.
2007; Atkins et al. 2005; McGrath 1993).
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