Łopuszyńska, A. M., M. Pawlicki, M. Kozioł, A. Krasa, E. Piekarska, and H. Piecewicz-Szczęsna. “Anti-Aging Properties of Metformin”. Journal of Education, Health and Sport, vol. 11, no. 9, Sept. 2021, pp. 37-42, doi:10.12775/JEHS.2021.11.09.005.