Burwell, A., Friend, C. and Hughes, D. (1978) “Late Archaean metamorphic Rb-Sr isochron ages from basic and ultrabasic rocks in the Bjørnesund – Ravns Storø region, southern West Greenland”, Rapport Grønlands Geologiske Undersøgelse. Copenhagen, Denmark, 90, pp. 135–141. doi: 10.34194/rapggu.v90.7612.