Hultberg, 1985b
From dinoflaj3
Hultberg, S.U., 1985b: Danian dinoflagellate zonation, the C-T boundary, and the stratigraphical position of the Fish Clay in southern Scandinavia. In: Hultberg, S.U., Dinoflagellate Studies of the Upper Maastrichtian and Danian in Southern Scandinavia, p.56-82; Department of Geology, University of Stockholm, Stockholm, Sweden. (Published thesis.)