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This work was supported in part by the Belgium state and the contract ARC 79/83-12.
Chargé de Recherches du FNRS.
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Frèbe, J.M. Left-right symmetry breaking and fermion masses. Lett. Nuovo Cimento 28, 619–623 (1980). https://doi.org/10.1007/BF02772268
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DOI: https://doi.org/10.1007/BF02772268