1. See, for example, the 2003 Homestake Collaboration Science Book and proposal, W.C. Haxton et al., nucl-exp/0308015/ and nucl-exp/030818/.
2. See 〈http://www.lngs.infn.it/〉.
3. K. Philpott, W.C. Haxton, 2006, in preparation.
4. See 〈http://www-sk.icrr.u-tokyo.ac.jp〉.
5. See 〈http://www.wipp.energy.gov/science/index.htm〉.