Ritzmann , K. (2006). Записки Горного института, 167(2), 71-76. извлечено от https://pmi.spmi.ru/pmi/article/view/7962

Ritzmann , K. (2006). Marine/continental facies patterns, sequence stratigraphy and a gocad-3D-modelling of the carboniferous/permian-boundary of the Donetsk basin. Journal of Mining Institute, 167(2), 71-76. Retrieved from https://pmi.spmi.ru/pmi/article/view/7962