1. Dipartimento
di Ingegneria Civile e Ambientale, University of Perugia, Strada di
Pentima 4, 05100 Terni, Italy
2. Instituto
de Ciencia y Tecnología de Polímeros, ICTP-CSIC, calle Juan
de la Cierva 3, 28006 Madrid, Spain
3. Laboratory
of Polymeric and Composite Materials, University of Mons (UMONS), Place
du Parc 23, B-7000 Mons, Belgium