MEASURING THE EFFICIENCY OF TOURISM COMPANIES LISTED ON BIST BY DATA ENVELOPMENT ANALYSIS METHOD. Üçüncü Sektör Sosyal Ekonomi Dergisi [Internet]. 2020 Sep. 25 [cited 2026 Jul. 12];55(3):1759-7. Available from: https://tisej.com/index.php/pub/article/view/478