Brzezicki Łukasz, Rusielik R. Measurement of efficiency of didactic activities of public universities of technology in Poland: directional distance function with undesirable output approach. BMEE [Internet]. 2020Apr.10 [cited 2024Nov.21];18(1):73-87. Available from: https://journals.vilniustech.lt/index.php/BMEE/article/view/11982