Danielle Kurtzleben, “Napoleon's conquest of Italy led to a copyright-fueled opera boom,” in Vox (24 October, 2014):
“…A new study provides evidence of how copyright laws inspire more and higher-quality artistic works. Michela Giorcelli and Petra Moser, Stanford University economists, studied the Italian opera scene from the late 1700s through 1900 and found that after Napoleon invaded Italy — bringing with him French copyright laws — those copyright laws were associated with both more and higher-quality operas…”