2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53516A very simple minisuperspace describing the Oppenheimer-Snyder collapsing star is found. The semiclasical wave function of that model turn out to describe a bound state. For fixed initial radius of the collapsing star, the corrssponding Bohr-Sommerfeld quantization condition implies mass quantization. An extension of this model, and some consequences, are considered.13 pages, BRX-TH-342High Energy Physics - Theorytext