2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39384The constraints from the non-observation of neutrinoless double beta decay on the violations of Lorentz invariance (VLI) or violations of the equivalence principle (VEP) have recently been re-examined (hep-ph/9904298) and it was claimed that the constraints are not valid. In this reply we point out that this statement is not correct and prove that the arguments given are wrong.4 pages; one irrelevant discussion removedHigh Energy Physics - Phenomenologytext