Zinchuk, Nikolai N., and Leonid D. Bardukhinov. “Diamonds from Semi-Industrial Kimberlites”. Proceedings of Voronezh State University. Series: Geology0, no. 2 (June 20, 2022): 32-45. Accessed December 15, 2025. https://journals.vsu.ru/geology/article/view/9277.