Utami, Westi, and Catur Sugiyanto. “Green Infrastructure Development Challenges: The Case of Yogyakarta International Airport”. Jurnal Ekonomi Indonesia 14, no. 1 (April 25, 2025): 69–92. Accessed September 6, 2026. http://jurnal.isei.or.id/index.php/isei/article/view/434.