Literature

Authors	Year	Title
M. Menning, Alekseev, A. S., Chuvashov, B. I., Davydov, V. I., Devuyst, F. - X., Forke, H. C., Grunt, T. A., Hance, L., Heckel, P. H., Izokh, N. G., Jin, Y. -.j, Jones, P. J., Kotlyar, G. V., Kozur, H. W., Nemyrovska, T. I., Schneider, J. W., Wang, X. -d, Weddige, K., Weyer, D., Work, D. M.	0	Global time scale and regional stratigraphic reference scales of Central and West Europe, East Europe, Tethys, South China, and North America as used in the Devonian-Carboniferous-Permian Correlation Chart 2003 (DCP 2003)
V. R. Lozovsky, Minikh, M. G., Grunt, T. A., Kukhtinov, D. A., Ponomarenko, A. G., Sukacheva, I. D.	2009	The Ufimian stage of the East European scale: status, validity, and correlation potential.

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