Vakhrameev,V.A. (1960)
Paleobotanical characteristic of Continental deposits on the boundary between the Cretaceous and Paleogene systems of Sberia [ Paleobotanicheskaya kharakteristika Kontinental' Nykh otlozheniy,Pogranichnykh Mezhdu Melovoy i Paleogenovoy Sistemami,Na Erritorii Sibiri ] International Geological Congress,Proceedings,XX!st Session. The Cretaceous-Tertiary Boundary: Report of Soviet Geologists, Part 6.
# 6 P. 210- 216