Resolutions of the All-Union Collequim on plant microfossils, (acritarchs), of Interior, (oil and gas bearing), Regions of the Siberian Platform.
Reference:
Pyatiletov,V.G. (1986)
Resolutions of the All-Union Collequim on plant microfossils, (acritarchs), of Interior, (oil and gas bearing), Regions of the Siberian Platform. Geologiya i Geofizika
Vol. 27 # 3 P. 116- 117