Schiebel, Ralf (2002): Planktic foraminiferal sedimentation and the marine calcite budget. Global Biogeochemical Cycles, 16(4), 1065, doi:10.1029/2001GB001459
Schiebel, Ralf; Hemleben, Christoph (2000): Interannual variability of planktic foraminiferal populations and test flux in the eastern North Atlantic Ocean (JGOFS). Deep Sea Research Part II: Topical Studies in Oceanography, 47(9-11), 1809-1852, doi:10.1016/S0967-0645(00)00008-4