1. AMANDA Collaboration. 1998, talk presented at the 18th Internat. Conf. on Neutrino Physics and Astrophysics (Neutrino 98), Takayama, Japan, 1998 June (hep-ex/9809025)
2. The ANTARES project
3. BAIKAL Collaboration. 1998, talk presented at the 18th Internat. Conf. on Neutrino Physics and Astrophysics (Neutrino 98), Takayama, Japan, 1998 June
4. Gaisser, T. K. 1990, Cosmic Rays and Particle Physics (Cambridge: Cambridge Univ. Press)