2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58460A simple and general derivation of Josephson formulae for the tunneling currents is presented on the basis of Sewell's general formulation of superconductivity in use of off-diagonal long range order (ODLRO).7pages, LaTeX2e; Two references and some bibliographical information are added to the original versionMathematical PhysicsSuperconductivity82D55; 81Txxtext