@article{StulpeRuch2006,
  author    = {Werner Stulpe and Ernst Ruch},
  title     = {Proof of the Mixing Theorem for Statistical Systems in Classical Physics. Ruch, Ernst; Stulpe, Werner},
  journal   = {Acta Applicandae Mathematicae. 53 (1998), H. 3},
  pages     = {329 -- 352},
  year      = {2006},
}