Fractal Scales in a Schwarzschild Atmosphere
  Recently, Glass and Krisch have extended the Vaidya radiating metric to include both a radiation fluid and a string fluid [1999 Class. Quantum Grav. vol 16, 1175]. Mass diffusion in the extended Schwarzschild atmosphere was studied. The continuous solutions of classical diffusive transport are believed to describe the envelope of underlying fractal behavior. In this work we examine the classical picture at scales on which fractal behavior might be evident. 
E.N. Glass and J.P. Krisch (Department of Physics, University of   Michigan, Ann Arbor, Michgan)