Ivanov, S. M., and S. O. Matviienko. “Recognition of Heart Rhythm Disorders in Children by Integral Parameters of Electrocardiograms”. Bulletin of Taras Shevchenko National University of Kyiv. Physical and Mathematical Sciences, no. 2 (December 23, 2023): 200–205. Accessed April 15, 2024. https://bphm.knu.ua/index.php/bphm/article/view/381.