For citations:
Grishkevich V.F., Nezhdanov A.A., Oleynik E.V. Principal contradictions in the way of West Siberian berrias-aptian deposit’s regional stratigraphic schemes developing. Oil and Gas Studies. 2025;(1):11-23. (In Russ.) https://doi.org/10.31660/0445-0108-2025-1-11-23