2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/151669This is a comprehensive review of the random-matrix approach to the theory of phase-coherent conduction in mesocopic systems. The theory is applied to a variety of physical phenomena in quantum dots and disordered wires, including universal conductance fluctuations, weak localization, Coulomb blockade, sub-Poissonian shot noise, reflectionless tunneling into a superconductor, and giant conductance oscillations in a Josephson junction.85 pages including 52 figures, to be published in Rev.Mod.PhysMesoscale and Nanoscale Physicstext