1. 1. Antonen E.G., Khianikiainen I.V. Somatoformnaia vegetativnaia disfunktsiia kak prediktor khronicheskoi ishemii mozga [Somatoform autonomic dysfunction as a predictor of chronic cerebral ischemia]. Uchenye zapiski Petrozavodskogo gosudarstvennogo universiteta. Seriia: Estestvennye i tekhnicheskie nauki [Scientific Notes of Petrozavodsk State University. Series: Natural and Technical Sciences]. 2014; 4 (141): 43-47. (In Russ.)
2. 2. Esina E. Iu., Liutov V.V., Tsygan V.N. Sovremennye predstavleniia o neirotsirkuliatornoi astenii u lits molodogo vozrasta v klinicheskoi praktike [Modern concepts of neurocirculatory asthenia in young people in clinical practice]. Zdorovie i obrazovanie v XXI veke [Health and Education in the 21st Century]. 2016; 5: 15-17. (In Russ.)
3. Quality of life in old age: problematic issues;Fernandez-Ballesteros;Applied research in quality of life march,2011
4. 4. Khianikiainen I.V., Molchanova E.V., Burkin M.M. Tserebrasteniia i sotsialnaia dezadaptatsiia tserebralno-disgemicheskogo geneza u pozhilykh lits Respubliki Kareliia [Cerebrasthenia and social maladaptation of cerebral dysgemic genesis in elderly people of the Republic of Karelia]. Vestnik nevrologii, psikhiatrii i neirokhirurgii [Bulletin of Neurology, Psychiatry and Neurosurgery]. 2020; 10:47-55. (In Russ.)
5. 5. Chutko L. S., Surushkina S. Iu., Iakovenko E.A., Anisimova T. I., Karpovskaia E.B., Vasilenko V. S., Cherednichenko D.V. Emotsionalnye narusheniia u patsientov s somatoformnymi rasstroistvami i ikh lechenie [Emotional disorders in patients with somatoform disorders and their treatment]. Zhurnal nevrologii i psikhiatrii im. S. S. Korsakova [Journal of Neurology and Psychiatry named after S. S. Korsakov]. 2020; 1 (120): 44-50. (In Russ.)