Structural relaxation in orthoterphenyl: a schematic mode coupling   theory model analysis
  Depolarized light scattering spectra of orthoterphenyl showing the emergence of the structural relaxation below the oscillatory microscopic excitations are described by solutions of a schematic mode--coupling--theory model. 
A.P. Singh, G. Li, W. G"otze, M. Fuchs, T. Franosch and H.Z. Cummins