Bondarenko,N.M. (1971)
The importance of Classopollis pollen for stratigraphy of the Jurassic and Cretaceous deposits of the Western Venisei-Khatanga Trough [ Zhachenie Pylsty Classopollis Dyla stratigrafii Yurskikh i Melovykh otlozhenii Zapadnoi Chasti Enisei-Khatangkogo Progiba ] Uchenye Zapiski(Science Notes), Paleontologiya i Stratigrafiya, (NIIGA) Ministerstvo Geologii SSR
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