Alexander Dmitriev, Elena Efremova, Lev Kuzmin
Institute of Radioengineering and Electronics Of the Russian Academy of Sciences
Mokhovaya st., 11/7, Moscow, GSP-9, 101999, Russia
Antonios Anagnostopoulos
Department of Physics, Aristotle University of Thessaloniki, GR-54006, Thessaloniki, Greece
Proceedings of 2001 Int. Symposium on Nonlinear Theory and its Applications,
Miyagi, Japan, October 28 - November 1, 2001, vol. 1, pp. 139-142