Bocken et al. (2019) - A Review and Evaluation of Circular Business Model Innovation Tools (Sustainability paper, LUND):
https://zenodo.org/record/3552433#.Xd54oZNKhQI
Tsanakas et al. (2019) - Towards a Circular Supply Chain for PV Modules: Review of Today's Challenges in PV Recycling, Refurbishment and Re-Certification (EU PV SEC paper, IMEC):
https://zenodo.org/record/3555124#.Xd5lio17k2w
Franco and Groesser (2021) - A systematic Literature Review of the Solar Photovoltaic Value Chain for a Circular Economy (Sustainability paper, BUAS):
https://www.mdpi.com/2071-1050/13/17/9615
Radavicius et al. (2021) - Circular solar industry supply chain through product technological design changes (Insights into regional development paper, Solitek):