Waves in fractional Zener type viscoelastic media
  Classical wave equation is generalized for the case of viscoelastic materials obeying fractional Zener model instead of Hooke's law. Cauchy problem for such an equation is studied: existence and uniqueness of the fundamental solution is proven and solution is calculated. 
Sanja Konjik, Ljubica Oparnica, Du\v{s}an Zorica
math.AP