Svyrydova, N., and N. Zhhilova. “Use of L- Arginine in the Treatment of Comorbid Pathology in Neurological Patients”. East European Journal of Neurology, no. 1(13) (March 20, 2017): 4-8. Accessed February 24, 2021. https://neurology-jornal.org/index.php/journal/article/view/25.