2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224083The electrical conductivity of disordered insulator-conductor composites have been studied for more than thirty years. In spite of this some properties of dc bulk conductivity of composites still remain incompletely understood. We present a brief review of the most significant theories that have been proposed to study the critical insulator-conductor transition comparing their predictions with many experimental results.11 pages 3 figures 1 tableAtomic and Molecular Clusterstext