А. Д. Савко, А. В. Крайнов, М. Ю. Овчинникова, А. В. Милаш, and В. М. Новиков, “Ages of formation weathering crusts and connection with deposits of lateral kaolins and ceramic clays within phanerozoic of the Voronezh anticlise”, geology, no. 3, pp. 23-34, Aug. 2019.