Hryshko, Yu. M., T. V. Gorbatch, and A. I. Gozhenko. “Circadian Rhythm of Metabolism Indicators in Healthy People According to Saliva Study Findings”. Journal of Education, Health and Sport 8, no. 10 (October 31, 2018): 338–346. Accessed April 24, 2024. https://apcz.umk.pl/JEHS/article/view/6306.