On the Decay of Almost Periodic Solutions of Anisotropic Degenerate   Parabolic-Hyperbolic Equations
  We discuss the well-posedness and decay of Besicovitch almost periodic solutions for a class of nonlinear degenerate anisotropic hyperbolic-parabolic equations. In our definition of weak entropy solution the initial data is only assumed in a weak sense, and in this connection the strong trace of the solution in the initial time hyperplane is also established. 
Hermano Frid
math.AP