Semi-Markov Chains and Hidden Semi-Markov Models toward Applications
  MLA
  Barbu, Vlad Stefan, and Nikolaos Limnios. Semi-markov Chains and Hidden Semi-markov Models Toward Applications. Springer, 2008.
  APA
  Barbu, V. Stefan, & Limnios, N. (2008). Semi-Markov Chains and Hidden Semi-Markov Models toward Applications. Springer.
  Chicago
  Barbu, Vlad Stefan, and Nikolaos Limnios. Semi-Markov Chains and Hidden Semi-Markov Models Toward Applications. : Springer, 2008.