[1]K. Ritzmann, PMI, т. 167, вып. 2, сс. 71-76, фев. 2006.

[1]K. Ritzmann, "Marine/continental Facies Patterns, Sequence Stratigraphy and a Gocad-3D-Modelling of the carboniferous/Permian-Boundary of the Donetsk Basin", PMI, vol. 167, no. 2, pp. 71-76, Feb. 2006.