In the mid-nineties, the Editorial Board of the Netherlands Yearbook of International Law decided to select the diversity in secondary rules and the unity of international law as a topic to celebrate the Yearbook's twenty-fifth anniversary. The focus was on sources, responsibility, countermeasures, and dispute settlement, thus reflecting Hart's secondary rules of recognition, change, and adjudication.
Fragmentation of International Law and Establishing an Accountability Regime for International Organizations: The Role of the Judiciary in Closing the Gap,
Mich. J. Int'l L.
Available at: http://repository.law.umich.edu/mjil/vol25/iss4/19