PIERS 2011 Marrakesh: Progress In Electromagnetics Research Symposium, Marrakesh, Morocco. The Electromagnetics Academy, Cambridge, MA: pp. 1586-1589; ISBN 978-1-934142-16-5
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Ballardin M, Tusa I, Fontana N, Monorchio A, Pelletti C, Rogovich A, Barale R, Scarpato R