Higgins, A. and Friderichsen, J. 1979. Boundary relationships between pre-Caledonian and Caledonian lithostructural units in the East Greenland Caledonides 72°-74°N. Rapport Grønlands Geologiske Undersøgelse. 95, (Dec. 1979), 87–90. DOI:https://doi.org/10.34194/rapggu.v95.7656.