2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/193629We study perfect fluid Stephani quantum cosmological model. In the present work the Schutz's variational formalism which recovers the notion of time is applied. This gives rise to Wheeler-DeWitt equation for the scale factor. We use the eigenfunctions in order to construct wave packets for each case. We study the time-dependent behavior of the expectation value of the scale factor, using many-worlds and deBroglie-Bohm interpretations of quantum mechanics.19 pages, 7 figuresGeneral Relativity and Quantum Cosmologytext