For citations:
Kutygin R.V., Budnikov I.V., Sivtchikov V.E. The main features of the Kasimovian – Gzhelian and Permian stratigraphy in the Siberian platform and adjacent fold belts. Arctic and Subarctic Natural Resources. 2020;25(4):5-29. (In Russ.) https://doi.org/10.31242/2618-9712-2020-25-4-1