Савко, А.Д., Мануковский, С.В., Крайнов, А.В., Корабельников, Н.А. and Милаш, А.В. 2018. Secondary kaolins of the devon of THE Voronezh anteclise by the example of the kozynka deposit. Proceedings of Voronezh State University. Series: Geology. 2 (May 2018), 20-28. DOI:https://doi.org/10.17308/geology.2018.2/1498.