Prokhorova, A., and N. Kadyrkhodjayeva. “BOTULOTOXIN THERAPY OF PATIENTS WITH PRIMARY CHRONIC HEADACHES (CHRONIC DAILY HEADACHE, TENSION HEADACHE)”. Toshkent Tibbiyot Akademiyasi Axborotnomasi, no. 2, July 2020, pp. 41-44, https://journals.tma.uz/index.php/ttaa/article/view/146.