Knudsen, Christian, Martin Sønderholm, Tjerk Heijboer, Jeppe Å. Kristensen, and Dag Bering. “The North Atlantic Provenance Database: An Introduction”. GEUS Bulletin 43 (July 22, 2019). Accessed April 25, 2024. https://geusbulletin.org/index.php/geusb/article/view/4221.