Ricardo A. Ostrower gave a presentation on "Material public order as a limit to the enforcement of the law agreed by the parties - The general principles of international commercial law. International conventions" at the Third Meeting of the International Chapters of the Spanish Arbitration Club, organized by the Spanish Arbitration Club and its River Plate Chapter, held on November 6-7, 2014, at the School of Law of the University of Buenos Aires, under the title "Does an arbitral (substantive) law exist?".