​Part I Philosophical Foundations: Maxime Grignon, Usage et légitimité.- Part II General Customary Law: Aurélie Brès, Tradition In The French Legal System - Outward Signs And Usefulness.- Marie Bourdeau, La délimitation du champ de l'usage.- Crystelle Sanchez-Saëz, The Impact Of Usages On Property Rights.- Philippe Grignon, Usages et contrat-type.- Part III National Customary Law: Lise Chatain, L'usuel et le Droit fiscal.- Eric Rakowski, Custom As Public Policy: Tying The Hands Of The Dead.- Pablo Echeverri, The Role Of Custom In Rule 144a Capital Markets Transactions.- Éric Sales, Les usages du pouvoir executif sous la Veme République.- Arlette Slomiansky, Political Considerations In The Recognition Of Usages - The Israeli Experience.- Marie-Christine Sordino, Droit pénal et usages, entre flux et reflux.- Amanda L. Tyler, Customary Law And The Domain Of Federal Common Law Today.- Part IV International Customary Law: Gustavo Cerqueira, Les usages en Droit privé européen.- Arthur Oulaï and Serge Kablan, Usages de l'internet et divulgation adaptative des clauses contractuelles: la force exécutoire de l'iconographie.- Pierre Mousseron, International Trade Usages: What's So Special About Them?.- John Yoo and Ivana Stradner, Customary International Law.