On Continued Gravitational Contraction by J. Robert Oppenheimer and Hartland Snyder Created 2026-10-20 Updated 2026-11-05
Primary pressureless spherical-collapse calculation distinguishing finite comoving collapse time from the distant-coordinate description and progressively redshifted escaping light. Physical Review 56, 455–459 (1939). doi.org/10.1103/PhysRev.56.455