1. Recovery of iron oxides from acid mine drainage and their application as adsorbent or catalyst
2. https://www.ellenmacarthurfoundation.org/assets/downloads/TCE_Ellen-MacArthur-Foundation_9-dec2015.pdf.
3. Maria. Antikainen, and Katri. Valkokari, Technology Innovation Management Review 6 (2016) 5-12.
4. R. Sofia, G.Ö. Sandström, 9th CIRP IPSS Conference: Circular Perspectives on Product/Service-Systems, Procedia CIRP 64 2017, pp 7–12.
5. Rodrigo de Almeida Silva, Carlos Otávio Petter, Ivo André Homrich Schneider, in Mine Water-Managing the Challenge, Rüde, Freund, Wolkersdorfer (Eds), IMWA, Aachen, Germany, 2011, pp 464–-474.