Miocene titanium-zyrconiumplacers of Ukrainian shield and Dnieper-Donets depression: stratigraphic position, lythostratigraphy and paleogeography - D. P. Khrushchov; Yu. Zosymovych; O. V. Lalomov; O. A. Kravchenko; S. P. Vasylenko; T. V. Okholina; A. A. Fursova (Geological Journal, 2015)