Kolesnikov, S. I., Moshchenko, D. I., Kuzina, A. A., Kazeev, K. S. y Akimenko, Y. V. (2019) «Development of Regional Maximum Permissible Concentrations of Oil, Lead, Chromium, Nickel, and Copper in the Ordinary Black Soils of Central Ciscaucasia», Amazonia Investiga, 8(24), pp. 38–44. Disponible en: https://amazoniainvestiga.info/index.php/amazonia/article/view/948 (Accedido: 18 noviembre 2025).