Mufeet, Musthapha, Kaldeen Mubarak, and Noordeen Nusrathali. “Measuring the Efficiency of Tourism Sector in Sri Lanka: An Extension of the Method to Stochastic Frontier Analysis”. The journal of contemporary issues in business and government 27, no. 1 (February 28, 2021): 3121–3131. Accessed September 12, 2025. https://textitlejournal.com/cibgp.com/index.php/1323-6903/article/view/777.