Liouville Invariance in Quantum and Classical Mechanics. - Alec Maassen van den Brink; Alexandre M. Zagoskin (Quantum Inf. Process., 2002)

A Characterization of Global Entanglement. - Peter J. Love; Alec Maassen van den Brink; A. Yu. Smirnov; Mohammad H. S. Amin; Miroslav Grajcar; E. Il'ichev; A. Izmalkov; Alexandre M. Zagoskin (Quantum Inf. Process., 2007)