A. Sen(De), Sen, U., Lewenstein, M., and Sanpera, A.,
“The separability versus entanglement problem”, in
Lectures on Quantum Information,
D. Bruss and Leuchs, G., Eds. Wiley, 2005, pp. 123–146.
K. Eckert, Guhne, O., Hulpke, F., Hyllus, P., Korbicz, J., Mompart, J., Bruss, D., Lewenstein, M., and Sanpera, A.,
“Entanglement properties of composite quantum systems”, in
Quantum Information Processing,
G. Leuchs and Beth, T., Eds. Berlin: Wilew-VCH, 2003, pp. 87–95.