Decay and decoupling of heavy right-handed Majorana neutrinos in the L-R model Paramita Adhya, D. Rai Chaudhuri and Amitava RaychaudhuriEur. Phys. J. C, 19 1 (2001) 183-190DOI: https://doi.org/epjc/v19/p183(epjc0575)