Schiøler, P., Andsbjerg, J., Clausen, O. R., Dam, G., Dybkjær, K., Hamberg, L., Heilmann-Clausen, C., Johannessen, E. P., Kristensen, L. E., Prince, I. and Rasmussen, J. A. (2007) “Lithostratigraphy: Westray Group, the Lark Formation”, GEUS Bulletin. Copenhagen, Denmark, 12, pp. 63–73. doi: 10.34194/geusb.v12.4937.