Covariant description of kinetic freeze out through a finite space-like   layer
  The problem of Freeze Out (FO) in relativistic heavy ion reactions is addressed. We develop and analyze an idealized one-dimensional model of FO in a finite layer, based on the covariant FO probability. The resulting post FO phase-space distributions are discussed for different FO probabilities and layer thicknesses. 
E. Molnar, L. P. Csernai, V. K. Magas, A. Nyiri, K. Tamosiunas