2007 · Mario D. Carelli, Bojan Petrović, et al. · ENEA Open Archive (National Agency for New Technologies, Energy and Sustainable Economic Development) · 3
2003 · P. Méloni, Fernanda T. Bianchi, et al. · ENEA Open Archive (National Agency for New Technologies, Energy and Sustainable Economic Development) · 1
2000 · Francesco Bianchi, P. Méloni, et al. · ENEA Open Archive (National Agency for New Technologies, Energy and Sustainable Economic Development) · 1