Kalsbeek, F. “Use of Rb-Sr Isotope Data to Constrain the Time of Deposition of Precambrian Metasediments: An Example from Hamborgerland, West Greenland”. Rapport Grønlands Geologiske Undersøgelse 159 (January 1, 1993): 95–100. Accessed July 3, 2024. https://geusjournals.org/index.php/rapggu/article/view/8216.