2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/181522In this paper we investigate a class of solutions of Einstein equations for the plane-symmetric perfect fluid case with shear and vanishing acceleration. If these solutions have shear, they must necessarily be non-static. We examine the integrable cases of the field equations systematically. Among the cases with shear we find three classes of solutions.12 pages, no figures, corrected minor typosGeneral Relativity and Quantum Cosmologytext