Alfonso Corniello (*), Marco Trifuoggi (**), Giovanni Ruggieri (°) & Mariangela Sellerino (°)
(*) Department of Civil, Architectural and Environmental Engineering, University of Naples, Piazzale Tecchio 80, 80125 Napoli, Italy. E-mail: alfonso.corniello@unina.it
(**) Department of Chemistry "Paolo Corradini", University of Naples Federico II, Naple, Italy.
(°) Outside expert. E-mail: mari_sellerino@yahoo.it