Garde, A.A, C Bugnon, and J Gothenborg. “Ornamental Stones in West and South Greenland”. Rapport Grønlands Geologiske Undersøgelse 152 (January 1, 1991): 50–55. Accessed November 27, 2024. https://geusjournals.org/index.php/rapggu/article/view/8155.