Berthelsen, A, and D Bridgwater. 1960. “On the Field Occurrence and Petrography of Some Basic Dykes of Supposed Pre-Cambrian Age from the Southern Sukkertoppen District, Western Greenland”. Bulletin Grønlands Geologiske Undersøgelse 24 (December). Copenhagen, Denmark:1-43. https://doi.org/10.34194/bullggu.v24.6557.