[1]Д. В. Наливкин, "Стратиграфия в СССР", PMI, т. 53, вып. 2, сс. 3-8, окт. 1967.

[1]D. V. Nalivkin, "Stratigraphy in the USSR", PMI, vol. 53, no. 2, pp. 3-8, Oct. 1967.