Zolotarova, K. O. “Optimization of the Clinical Course of Stable Angina Pectoris With the Use of Omega-3 Polyunsaturated Fatty Acids and Combined Magnetotherapy”. Journal of Education, Health and Sport, vol. 6, no. 12, Dec. 2016, pp. 975-82, https://apcz.umk.pl/JEHS/article/view/5087.