Chiara Burlina Gran Sasso Science Institute (GSSI)   viale Francesco Crispi 7 L'Aquila, 67100 Italy   chiara.burlina@gssi.it   https://sites.google.com/gssi.it/chiaraburlina/home           JEL Areas: R1 : General Regional Economics (includes Regional Data) O3 : Technological Change; Research and Development: General