1. Bahcall, J. N. & Davis, R. Science 191, 264–267 (1976).
2. Ulrich, R. K. Science 190, 619–624 (1975).
3. Sakurai, K. The Mysteries of the Solar Neutrinos, 254 (Kodansha, Tokyo, 1977).
4. Davis, R. & Evans, J. C. Proc. 13th Int. Conf. Cosmic Rays 3, 2001–2006 (1973).
5. Davis, R. & Evans, J. C. Report on the Brookhaven Solar Neutrino Experiment, BNL-21837 (1976).