| Affiliation: | 1. Istituto per le Applicazioni del Calcolo, CNR, Roma, Italy;2. Dipartimento di Informatica, Università di Torino, Italy;3. Dipartimento di Elettronica, Politecnico di Torino, Italy;1. St.Petersburg Department of V.A.Steklov Institute of Mathematics of Russian Academy of Science and St.Petersburg State University, Fontanka embankment, 27, St.Petersburg, 191023, Russia;2. Münster University, Orléans-Ring 10, 48149 Münster, Germany;3. St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia;4. MAI, Linköping University, Sweden |
