Kourtit K, Nijkamp P, Suzuki S. Effective Clusters as Territorial Performance Engines in a Regional Development Strategy - A Triple-Layer DEA Assessment of the Aviation Valley in Poland. REGION [Internet]. 2017 Aug. 22 [cited 2024 Nov. 21];4(3):39-63. Available from: https://openjournals.wu.ac.at/ojs/index.php/region/article/view/166