1. Business excellence through resource efficiency (betre): An evaluation of the UKs highest recruiting, facilitated self-help waste minimisation project
2. ADL [Arthur D. Little, FHG ISI, Wuppertal Institut]. 2005. Studie zur Konzeption eines Programms für die Steigerung der Materialeffizienz in mittelständischen Unternehmen, Abschlussbericht für das BMWA [Study for the conception of a programme to increase material efficiency in small and medium sized enterprises, Final report for the Federal Ministry of Economics and Labour (BMWA)]
3. Aryee, J. R. 2007. “Disclosing payment flows. Strategies for the promotion of transparency in the resource sector.”. Paper presented at the BAKS/SEF/WI Workshop, Berlin, 10–11 May 2007. Available from:www.sef‐bonn.org
4. Corporate Governance of Sustainability