?:authorAffiliation
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[\'Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Mezzocannone, 4, 80138 Napoli, Italy; Center for Economic Studies - CESifo, Italy. Electronic address: vincenzo.alfano@unina.it.\', \'Department of Mathematics, Information Sciences and Economics, University of Basilicata, Italy; National University Centre for Applied Economic Studies - CMET 05, Italy. Electronic address: salvatore.ercolano@unibas.it.\', \'Department of Human and Social Science, University of Napoli L\'Orientale, Italy. Electronic address: lcicatiello@unior.it.\']
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