“An Occurrence of Tertiary Shales from the Harder Fjord Fault, North Greenland Fold Belt, Peary Land”. Rapport Grønlands Geologiske Undersøgelse 101 (December 31, 1980): 61–64. Accessed October 18, 2025. https://geusjournals.org/index.php/rapggu/article/view/7721.