1. for a review see M.Nakahata, Neutrino masses and oscillations, in these Proceedings.
2. The CHOOZ Collaboration, Proposal. Available on the internet at
http://duphy4.physics.drexel.edu/chooz_pub/
.
3. The PALO VERDE collaboration, Proposal.
4. B. Achkar et al., Nucl. Phys. B 434, 503 (1995).
5. G. Zacek et al., Phys. Rev. D 34, 2621 (1986).