1. Paleocene;Ahmadi,2003
2. Magnetostratigraphy of the type Selandian: preliminary results;Ali;GFF,1994
3. Late Oligocene foraminifera from the Krosno Beds in the San valley section (Bieszczady Mountains); Silesian Unit, Polish Outer Capathians;Bąk;Ann. Soc. Geol. Pol.,1999
4. Stratigraphie und Verbreitung des Dan (Tertiär) in Nordwestdeutschland;Baldschuhn;Z. Dtsch. Geol. Ges.,1979
5. Biostratigraphic investigation of Danian in boreholes 505 and 515 Store Bælt, on the basis of planktonic foraminifera;Bang;Geotech. Inst. Bull.,1982