Статьи в международных изданиях:
Davidov V.I., Chernykh V.V., Chuvashov B.I. Faunal assemblage and сorrelation of Kasimovian-Gzhelian Transition at Usolka Section, Southern Urals, Russia (a potential candidate for GSSP to define base of Gzhelian Stage) // Stratigraphy, 2008. V. 5, no 2. Р. 113-135, New York.
