Wagenhals, Sabine, Wendy Garner, Les Duckers, and Katja Kuhn. “Sustainability Index With Integrated Indicator Dependencies”. Business, Management and Economics Engineering 12, no. 1 (June 30, 2014): 15-29. Accessed January 4, 2025. https://transport.vgtu.lt/index.php/BMEE/article/view/3482.