1. T. Yanagida, in: O. Sawada, A. Sugamoto (Eds.) Proc. of the Workshop on the Unified Theory and Baryon Number in the Universe, KEK report 79-18, Tsukuba, Japan, 1979, p. 95
2. Supergravity;Gell-Mann,1979
3. Zeroes of the neutrino mass matrix
4. A new mechanism for baryogenesis