Michelsen, O., and L. H. Jensen. “Well Records on the Phanerozoic Stratigraphy in the Fennoscandian Border Zone, Denmark. Hans-1, Sæby-1, and Terne 1 Wells”. Danmarks Geologiske Undersøgelse Serie A, vol. 29, Oct. 1991, pp. 1-37, doi:10.34194/seriea.v29.7049.