“Prospects for the Use of Rocks of the Ergeninskaya Suite for Obtaining Ti-Zr Raw Materials (Republic of Kalmykia)”. Proceedings of Voronezh State University. Series: Geology, no. 2, Aug. 2023, pp. 44-56, https://doi.org/10.17308/geology/1609-0691/2023/2/44-56.