Majorana neutrinos with effective interactions in B decays Lucía Duarte, Javier Peressutti, Ismael Romero and Oscar A. Sampayo Eur. Phys. J. C, 79 7 (2019) 593 Published online: 13 July 2019 DOI: 10.1140/epjc/s10052-019-7104-x