Citation: H. Mai et al., FOSSIL COCCOSPHERES FROM THE K T BOUNDARY SECTION FROM GEULHEMMERBERG, THE NETHERLANDS/, Micropaleontology, 43(3), 1997, pp. 281-302
Citation: H. Mai et al., COCCOSPHERES OF A RARE NANNOFOSSIL SPECIES - BIANTHOLITHUS-SPARSUS BRAMLETTE AND MARTINI, 1964, Marine micropaleontology, 24(1), 1994, pp. 1-2