Anatolij K Val'kov

The lower cambrian fossil anabaritids: Affinities, occurrences and systematics

Artem V. Kouchinsky, W. Feng, R. V. Kutygin, 2009 .

Pre-Tommotian age of the lower Pestrotsvet Formation in the Selinde section on the Siberian platform: carbon isotopic evidence

S. Bengtson, B. Runnegar, E. Young, 2005, Geological Magazine.

Carbon isotope stratigraphy and the problem of a pre-Tommotian Stage in Siberia

S. Bengtson, S. Pelechaty, P. Torssander, 2001, Geological Magazine.