Tinkov A. А., Ajsuvakova О., Skalnaya М., Karganov М., S.-S. Chang, and Skalny А. “Measuring Changes in Serum, Hair and Urinary Levels of Cobalt, Copper, Manganese, and Iron in Obesity and Hypertention Using the ICP-MS Technique”. Patologicheskaya Fiziologiya I Eksperimental’naya Terapiya (Pathological physiology and experimental Therapy), vol. 64, no. 2, May 2020, pp. 89-95, doi:10.25557/0031-2991.2020.02.89-95.