Abduyeva, F. M., and E. P. Kamenskaya. “VEGETATIVE-VASCULAR DYSTONIA OR SOMATOFORM AUTONOMIC DYSFUNCTION OF THE HEART?”. The Journal of V. N. Karazin Kharkiv National University, Series "Medicine", no. 23, 1, pp. 102-5, https://periodicals.karazin.ua/medicine/article/view/6732.