Keiller, Scott and Charter, Martin (2014) Grassroots innovation and the circular economy: a global survey of repair cafés and hackerspaces. Project Report. Centre for Sustainable Design, Farnham, Surrey. (Unpublished)

Keiller, Scott and Charter, Martin (2016) The second global survey of repair cafés: a summary of findings. Project Report. Centre for Sustainable Design, University for the Creative Arts, Farnham, Surrey.