1. Ritzmann K. // Записки Горного института. 2006. Том 167№ 2. C. 71-76.

1. Ritzmann K. Marine/continental facies patterns, sequence stratigraphy and a gocad-3D-modelling of the carboniferous/permian-boundary of the Donetsk basin // Journal of Mining Institute. 2006. Том 167№ 2. C. 71-76.