Prof. and Director of the Center for Oceans & Coastal Law Charles Norchi has edited a book, Piracy in Comparative Perspective: Problems, Strategies, Law, published by A. Pedone (France) & Hart (U.K.). His co-editor is Gwenaelle Proutiere-Maulion. A link to the book can be found at http://www.pedone.info/piracy/piracy.html.
