TY - JOUR TI - Towards Measuring the Informal City: A Societal Metabolism Approach PY - 2019 AU - Suzanne Smit AU - Josephine K. Musango AU - Zora Kovacic AU - Alan C. Brent T2 - Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources LK - https://onlinelibrary.wiley.com/doi/abs/10.1111/jiec.12776 DO - 10.1111/jiec.12776 ER -