Dawes, P.R, C.R.L Friend, A.P Nutman, and N.J Soper. 1989. “The Blokken Gneisses: A Re-Appraisal”. Rapport Grønlands Geologiske Undersøgelse 146 (December). Copenhagen, Denmark:83-86. https://doi.org/10.34194/rapggu.v146.8101.