Maurizio Maria Torrente(*) (**), Alfonsa Milia(***), Francesca Bellucci(****) & Giuseppe Rolandi(****)
(*) DSGA, University of Sannio, Via Portarsa, 11 - I-82100 Benevento, Italy.
(**) Corresponding author: E-mail address: torrente@
unisannio.it (***) IAMC, CNR, Calata Porta di Massa, Porto di Napoli -I-80133, Naples, Italy.
(****) DST, University Federico II, Via Mezzocannone, 8 - I-80138,Naples, Italy.