0957-4174/$ see front matter 2013 Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.eswa.2013.04.037 ⇑ Corresponding author. Tel.: +39 0547339236. E-mail addresses: [email protected] (C. Casanova), annalisa. [email protected] (A. Franco), [email protected] (A. Lumini), dario.maio@ unibo.it (D. Maio). Cristiana Casanova, Annalisa Franco, Alessandra Lumini ⇑, ...
