Pedersen, S, O Larsen, D Bridgwater, and J Watterson. 1974. “Rb/Sr Whole Rock Isochron Age Determinations on Metamorphosed Acid Volcanic Rocks and Granitic Gneisses from the Ketilidian Mobile Belt, South-East Greenland”. Rapport Grønlands Geologiske Undersøgelse 66 (December). Copenhagen, Denmark:12-20. https://doi.org/10.34194/rapggu.v66.7398.