Jepsen, H., Kalsbeek, F. and Suthren, R. 1980. The Zig-Zag Dal Basalt Formation, North Greenland. Rapport Grønlands Geologiske Undersøgelse. 99, (Dec. 1980), 25–32. DOI:https://doi.org/10.34194/rapggu.v99.7667.