PIERS Proceedings, Beijing, China (2009). The Electromagnetics Academy: 983-987; ISBN 978-1-934142-08-0
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Gaetani R, Ledda M, Barile L, Chimenti I, De Carlo F, Forte E, Ionta V, Giuliani L, D'Emilia E, Frati G, Miraldi F, Pozzi D, Messina E, Grimaldi S, Giacomello A, Lisi A