November 17, 2023 Aggarwal, R. M., & Haglund, L. (2019). Advancing Water Sustainability in Megacities: Comparative Study of São Paulo and Delhi Using a Social-Ecological System Framework. Sustainability, 11(19), 5314. Home » Aggarwal, R. M., & Haglund, L. (2019). Advancing Water Sustainability in Megacities: Comparative Study of São Paulo and Delhi Using a Social-Ecological System Framework. Sustainability, 11(19), 5314.