Helmersen examines the significance of teachings in the decision-making of judges at the International Court of Justice, suggests why judges do (or do not) use teachings, and compares how the Court's practice differs from other courts.

Sondre Torp Helmersen is Associate Professor and Vice Dean for Research at the Faculty of Law, UiT The Arctic University of Norway. He has published widely on the sources of international law and other topics in leading journals. Before entering academia he worked at the Norwegian Ministry of Foreign Affairs.

1. Introduction; 2. The ICJ statute article 38(1); 3. The general role of teachings in the ICJ; 4. Variations between works; 5. Variations between judges; 6. Concluding reflections; Appendices; Bibliography; Index.