The role of phytoplankton in Lower Eocene shale formations of the Tadshik Depression and the Gissarskiy Khrebet.
Reference:
Oleynik,V.V. et al. (1980)
The role of phytoplankton in Lower Eocene shale formations of the Tadshik Depression and the Gissarskiy Khrebet. International Palynological Conference,5th.(Cambridge),Cenozoic Palynology in Middle Asia and the Caucasus,History and Annod Bibliography
P. 180- 181