2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89224The paper is withdrawn by the author, due to the fact that in Larsson's Phys.Lett. A256 (1999) 245-252 (quant-ph/9901074) a similar model was published with even higher efficiency.Withdrawn!Quantum Physicstext