Modernization of the stratigraphic schemes of Mesozoic deposits in Ukraine - M. M. Ivanik; D. M. P′iatkova; L. F. Plotnikova; N. M. Zhabina; O. A. Shevchuk; O. D. Veklych; O. V. Anikeieva (Tectonics and stratigraphy, 2014)