Druzhyna, O., and O. Loskutov. “Impact of General Anesthesia on the Activity of Lipids Peroxidase Oxidation During Cardiac Surgery for Elderly Patients”. Journal of Progressive Research in Chemistry, Vol. 2, no. 2, Nov. 2015, pp. 92-96, http://scitecresearch.com/journals/index.php/jprc/article/view/502.