Identification of the relaxation kernel in diffusion processes and   viscoelasticity with memory via deconvolution
  We present an algorithm for the identification of the relaxation kernel in the theory of diffusion systems with memory (or of viscoelasticity) which is linear, in the sense that we propose a linear Volterra integral equation of convolution type whose solution is the relaxation kernel. The algorithm is based on the observation of the flux through a part of the boundary of a body. 
L. Pandolfi
math.OC