Disordered systems on various time scales: a-Si3B3N7 and homogeneous   sintering
  Modeling of materials systems for long times commonly requires the use of separation of time scale methods. We discuss this general approach and present two example systems, a-Si3B3N7 and the generation of homogeneous sinters. 
J. C. Schon, A. Hannemann, G. Sethi, M. Jansen, P. Salamon, R. Frost,   L. Kjeldgaard