Research 2024 Fabienne Hoelzel Water Supply Systems in Urban Slum Communities in Lagos, Nigeria: Between Selfsupply and Co-production 2023 Fabienne Hoelzel Lagos, Nigeria: A Study in Anarchy and Negotiation 2021 Yishak Teklegiorgis, Ute Vees Methods and Methodologies in Higher Education in Urban Design in the Context of Rapid Urbanization Azeb Tesfaye Legese African Mobility 2020 Fabienne Hoelzel Effective, affordable and community-based planning approaches in urban slum settlements in Lagos, Nigeria. 2018 Fabienne Hoelzel The strategic, the anthropological, and the politics: Tools and failures of actor-based (urban) design in low-income communities in Lagos, Nigeria. Leule Mebratie Construction Materials Selection Framework for Sustainable Urban Infrastructure Design in Sub-Saharan Africa. The Case of Ethiopia. Uwe Fischer, Fabienne Hoelzel Mobile Dry Diversion Toilet