Author Details

El Haouij, Neska, <!-- p, li { white-space: pre-wrap; } --> <p><!--StartFragment-->CEA-LinkLab, Tunisia</p><p>Tunis El Manar University, Tunisia</p><p>Paris Sud University, France<!--EndFragment--></p>, Tunisia



GRASPA 2019 is organised with the support of "Dipartimento di Economia",  University "G. d'Annnunzio", Chieti-Pescara