NJL breaking of supersymmetric GUTs
Nuclear Physics B Elsevier 409:1 (1993) 161-185
Discrete gauge symmetries in axionic extensions of the supersymmetric standard model
Physics Letters B Elsevier 297:3-4 (1992) 298-304
E6 GUT and large neutrino mixing
Physics Letters B Elsevier 296:1-2 (1992) 127-131
Heavy top in an E6 model for fermionic masses and mixing
Nuclear Physics B Elsevier 384:1-2 (1992) 78-100