Optimizing Urban Material Flows and Waste Streams in Urban Development through Principles of Zero Waste and Sustainable Consumption Author Name Steffen Lehmann Category Computer science, information & general works Type Journal Tags Urban Waste Streams,Material Flow,Closed-Loop Urban Login to Access Content Add new comment You must have JavaScript enabled to use this form. Your name Subject Comment About text formats Plain text No HTML tags allowed. Lines and paragraphs break automatically. Web page addresses and email addresses turn into links automatically.