Boak, J., R. Dymek, and L. Gromet. “Petrology and Rare Earth Element Geochemistry of Clastic Metasedimentary Rocks from the Isua Supracrustal Belt, West Greenland”. Rapport Grønlands Geologiske Undersøgelse, vol. 112, Dec. 1983, pp. 23-33, doi:10.34194/rapggu.v112.7810.