TY - JOUR TI - Maintenance and Expansion: Modeling Material Stocks and Flows for Residential Buildings and Transportation Networks in the EU25. PY - 2015 AU - Dominik Wiedenhofer AU - Julia K Steinberger AU - Nina Eisenmenger AU - Willi Haas T2 - Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources LK - http://www.ncbi.nlm.nih.gov/pubmed/27524878 DO - 10.1111/jiec.12216 ER -