2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149606A derivation of the Bohm model, and some general comments about it, are given. A modification of the model which is formally local and Lorentz-invariant is introduced, and its properties studied for a simple experiment.14 pages, tex, no figures, this replacement removes an unecessary macroQuantum Physicstext