Pflaumann, U.; Krasheninnikov, V. A. (1978): Cretaceous calcisphaerulids from DSDP Leg 41, eastern North Atlantic. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: White, S. M. (editor), Supko, P. R. (editor), Natland, J. (editor), Gardner, J. (editor), Herring, J. (editor), Initial reports of the Deep Sea Drilling Project; Supplement to volumes XXXVIII, XXXIX, XL, and XLI, 38-41 (Supplement), 817-839, georefid:1979-010718