1. A. S. Holevo, Statistical Structure of Quantum Theory (Springer, Berlin, 2001).
2. E. B. Davies, Quantum Theory of Open Systems (Academic, London, 1976).
3. H.-P. Breuer and F. Petruccione, The Theory of Open Quantum Systems (Oxford Univ. Press, Oxford, 2002).
4. A. S. Holevo, Quantum Systems, Channels, Information. A Mathematical Introduction (de Gruyter, Berlin, Boston, 2012).
5. T. Heinosaari and M. Ziman, The Mathematical Language of Quantum Theory (Cambridge Univ. Press, Cambridge, 2012).