Damyanov, Petar, I. Milanov, S. Ivanova, and K. Stambolieva. 2018. “Translation, Adaptation and Validation of COMPASS 31 in Bulgarian Language for Use in Patients With Multiple Sclerosis”. Movement Disorders Bulgaria 15 (2):9-14. https://multiplesclerosis-bg.com/journal/index.php/md/article/view/50.